diff --git a/addons/account/account_invoice_view.xml b/addons/account/account_invoice_view.xml
index 06b213a6620..d0de789c3ab 100644
--- a/addons/account/account_invoice_view.xml
+++ b/addons/account/account_invoice_view.xml
@@ -249,7 +249,7 @@
                             <group>
                                 <group>
                                     <field domain="[('partner_id', '=', partner_id)]" name="partner_bank_id" on_change="onchange_partner_bank(partner_bank_id)"/>
-                                    <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_invoice']}"/>
+                                    <field name="user_id" context="{'default_groups_ref': ['account.group_account_invoice']}"/>
                                     <field name="name" invisible="1"/>
                                     <field name="payment_term" widget="selection"/>
                                 </group>
@@ -390,7 +390,7 @@
                             <group col="4">
                                 <group>
                                     <field name="company_id" on_change="onchange_company_id(company_id,partner_id,type,invoice_line,currency_id,context)" widget="selection" groups="base.group_multi_company"/>
-                                    <field name="user_id" groups="base.group_user" context="{'default_groups_ref': ['base.group_user', 'account.group_account_invoice']}"/>
+                                    <field name="user_id" groups="base.group_user" context="{'default_groups_ref': ['account.group_account_invoice']}"/>
                                     <field domain="[('partner_id.ref_companies', 'in', [company_id])]" name="partner_bank_id"/>
                                     <field name="period_id" domain="[('state', '=', 'draft'), ('company_id', '=', company_id)]"
                                         groups="account.group_account_manager"
diff --git a/addons/account/account_view.xml b/addons/account/account_view.xml
index a05977fc405..738c3b0954b 100644
--- a/addons/account/account_view.xml
+++ b/addons/account/account_view.xml
@@ -413,7 +413,7 @@
                         <page string="Advanced Settings">
                             <group>
                                 <group>
-                                    <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_user']}"/>
+                                    <field name="user_id" context="{'default_groups_ref': ['account.group_account_user']}"/>
                                     <field name="sequence_id" required="0"/>
                                 </group>
                                 <group>
@@ -2269,7 +2269,7 @@
                     <group>
                         <group>
                             <field name="journal_id" on_change="onchange_journal_id(journal_id)" widget="selection" domain="[('type', '=', 'cash')]" />
-                            <field name="user_id" readonly="1" string="Responsible" context="{'default_groups_ref': ['base.group_user', 'account.group_account_user']}"/>
+                            <field name="user_id" readonly="1" string="Responsible" context="{'default_groups_ref': ['account.group_account_user']}"/>
                             <field name="total_entry_encoding"/>
                             <field name='company_id' widget="selection" groups="base.group_multi_company" />
                         </group>
diff --git a/addons/account/project/project_view.xml b/addons/account/project/project_view.xml
index d29c71e6956..bc2d07c7230 100644
--- a/addons/account/project/project_view.xml
+++ b/addons/account/project/project_view.xml
@@ -131,7 +131,7 @@
                             <field name="name"/>
                             <field name="account_id"/>
                             <field name="journal_id"/>
-                            <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_invoice']}"/>
+                            <field name="user_id" context="{'default_groups_ref': ['account.group_account_invoice']}"/>
                         </group>
                         <group>
                             <field name="date"/>
diff --git a/addons/account_analytic_default/account_analytic_default_view.xml b/addons/account_analytic_default/account_analytic_default_view.xml
index f5e93c3616d..e00d192f402 100644
--- a/addons/account_analytic_default/account_analytic_default_view.xml
+++ b/addons/account_analytic_default/account_analytic_default_view.xml
@@ -29,7 +29,7 @@
                         <separator string="Conditions" colspan="4"/>
                         <field name="product_id"/>
                         <field name="partner_id"/>
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_invoice', 'base.group_sale_salesman']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['account.group_account_invoice', 'base.group_sale_salesman']}"/>
                         <field name="company_id" widget="selection" groups="base.group_multi_company"/>
                         <field name="date_start"/>
                         <field name="date_stop"/>
diff --git a/addons/account_budget/account_budget_view.xml b/addons/account_budget/account_budget_view.xml
index 235d2594155..fe8ebf2ef6f 100644
--- a/addons/account_budget/account_budget_view.xml
+++ b/addons/account_budget/account_budget_view.xml
@@ -111,7 +111,7 @@
                         </div>
                         <group>
                             <group>
-                                <field name="creating_user_id" attrs="{'readonly':[('state','!=','draft')]}" context="{'default_groups_ref': ['base.group_user', 'account.group_account_user']}"/>
+                                <field name="creating_user_id" attrs="{'readonly':[('state','!=','draft')]}" context="{'default_groups_ref': ['account.group_account_user']}"/>
                                 <field name="validating_user_id" readonly="True" attrs="{'readonly':[('state','!=','draft')]}"/>
                             </group>
                             <group>
diff --git a/addons/account_payment/account_payment_view.xml b/addons/account_payment/account_payment_view.xml
index 6f4dae1e7e1..1249674812d 100644
--- a/addons/account_payment/account_payment_view.xml
+++ b/addons/account_payment/account_payment_view.xml
@@ -79,7 +79,7 @@
                     </div>
                     <group>
                         <group>
-                            <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_invoice']}"/>
+                            <field name="user_id" context="{'default_groups_ref': ['account.group_account_invoice']}"/>
                             <field name="mode"/>
                         </group>
                         <group>
diff --git a/addons/analytic/analytic_view.xml b/addons/analytic/analytic_view.xml
index 3183625d267..d05254e7c2d 100644
--- a/addons/analytic/analytic_view.xml
+++ b/addons/analytic/analytic_view.xml
@@ -22,7 +22,7 @@
                         <group name="main">
                             <group>
                                 <field name="partner_id" on_change="on_change_partner_id(partner_id, name)"/>
-                                <field name="manager_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_manager']}"/>
+                                <field name="manager_id" context="{'default_groups_ref': ['account.group_account_manager']}"/>
                                 <field name="currency_id" attrs="{'invisible': ['|',('type', '&lt;&gt;', 'view'), ('company_id', '&lt;&gt;', False)]}"/>
                             </group>
                             <group>
diff --git a/addons/analytic_user_function/analytic_user_function_view.xml b/addons/analytic_user_function/analytic_user_function_view.xml
index 7f70d1983ba..72741f2cf10 100644
--- a/addons/analytic_user_function/analytic_user_function_view.xml
+++ b/addons/analytic_user_function/analytic_user_function_view.xml
@@ -8,7 +8,7 @@
             <field name="model">analytic.user.funct.grid</field>
             <field name="arch" type="xml">
                 <tree string="Invoicing Data" editable="bottom">
-                    <field name="user_id" on_change="onchange_user_product_id(user_id, product_id)" context="{'default_groups_ref': ['base.group_user', 'account.group_account_manager']}"/>
+                    <field name="user_id" on_change="onchange_user_product_id(user_id, product_id)" context="{'default_groups_ref': ['account.group_account_manager']}"/>
                     <field name="product_id" on_change="onchange_user_product_id(user_id, product_id)" domain="[('type','=','service')]"/>
                     <field name="price"/>
                     <field name="uom_id" groups="product.group_uom"/>
@@ -22,7 +22,7 @@
             <field name="arch" type="xml">
                 <form string="Invoicing Data">
                     <group>
-                        <field name="user_id" on_change="onchange_user_product_id(user_id, product_id)" context="{'default_groups_ref': ['base.group_user', 'account.group_account_manager']}"/>
+                        <field name="user_id" on_change="onchange_user_product_id(user_id, product_id)" context="{'default_groups_ref': ['account.group_account_manager']}"/>
                         <field name="product_id" domain="[('type','=','service')]" on_change="onchange_user_product_id(user_id, product_id)"/>
                         <field name="price"/>
                         <field name="uom_id" groups="product.group_uom"/>
@@ -102,7 +102,7 @@
             <field name="inherit_id" ref="hr_timesheet.hr_timesheet_line_form"/>
             <field name="arch" type="xml">
                 <xpath expr="//field[@name='user_id']" position="replace">
-                    <field name="user_id"  required="1" on_change="on_change_user_id(user_id, account_id, unit_amount)" context="{'default_groups_ref': ['base.group_user']}"/>
+                    <field name="user_id"  required="1" on_change="on_change_user_id(user_id, account_id, unit_amount)"/>
                 </xpath>
             </field>
         </record>
diff --git a/addons/base_calendar/base_calendar_view.xml b/addons/base_calendar/base_calendar_view.xml
index fad592311b0..92ffad4be9a 100644
--- a/addons/base_calendar/base_calendar_view.xml
+++ b/addons/base_calendar/base_calendar_view.xml
@@ -97,7 +97,7 @@
                     <page string="Event">
                         <group col="6" colspan="4">
                              <separator colspan="6" string="Visibility"/>
-                             <field name="user_id" string="Responsible User" context="{'default_groups_ref': ['base.group_user']}"/>
+                             <field name="user_id" string="Responsible User"/>
                              <field name="show_as" string="Show Time as"/>
                              <field name="class" string="Privacy"/>
                              <field name="recurrent_id_date" invisible="1"/>
diff --git a/addons/base_calendar/crm_meeting_view.xml b/addons/base_calendar/crm_meeting_view.xml
index ab256f26455..d9b659b91fa 100644
--- a/addons/base_calendar/crm_meeting_view.xml
+++ b/addons/base_calendar/crm_meeting_view.xml
@@ -68,7 +68,7 @@
                                     on_change="onchange_dates(date,False,date_deadline)"/>
                             </group>
                             <group>
-                                <field name="user_id" groups="base.group_no_one" context="{'default_groups_ref': ['base.group_user']}"/>
+                                <field name="user_id" groups="base.group_no_one"/>
                                 <field name="categ_ids" widget="many2many_tags"/>
                                 <field name="location"/>
                                 <field name="organizer" groups="base.group_no_one"/>
diff --git a/addons/crm/crm_case_section_view.xml b/addons/crm/crm_case_section_view.xml
index c788872b47e..eda1bcf2470 100644
--- a/addons/crm/crm_case_section_view.xml
+++ b/addons/crm/crm_case_section_view.xml
@@ -175,7 +175,7 @@
                                 <field name="active"/>
                             </group>
                             <group>
-                                <field name="user_id"/>
+                                <field name="user_id" context="{'default_groups_ref': ['base.group_sale_salesman_all_leads']}"/>
                                 <field name="code"/>
                             </group>
                             <group colspan="4" attrs="{'invisible': [('use_leads', '=', False)]}">
diff --git a/addons/crm/crm_lead_view.xml b/addons/crm/crm_lead_view.xml
index 3001e8b1d88..74485354570 100644
--- a/addons/crm/crm_lead_view.xml
+++ b/addons/crm/crm_lead_view.xml
@@ -153,7 +153,7 @@
                         </group>
                         <group>
                             <field name="user_id" on_change="onchange_user_id(section_id, user_id)"
-                                context="{'default_groups_ref': ['base.group_user', 'base.group_sale_salesman_all_leads'] }"/>
+                                context="{'default_groups_ref': ['base.group_sale_salesman_all_leads'] }"/>
                             <label for="section_id" groups="base.group_multi_salesteams"/>
                             <div groups="base.group_multi_salesteams">
                                 <field name="section_id"/>
@@ -429,7 +429,7 @@
                             </group>
 
                             <group>
-                                <field name="user_id" on_change="onchange_user_id(section_id, user_id)" context="{'default_groups_ref': ['base.group_user', 'base.group_sale_salesman_all_leads']}"/>
+                                <field name="user_id" on_change="onchange_user_id(section_id, user_id)" context="{'default_groups_ref': ['base.group_sale_salesman_all_leads']}"/>
                                 <label for="section_id" groups="base.group_multi_salesteams"/>
                                 <div groups="base.group_multi_salesteams">
                                     <field name="section_id" widget="selection"/>
diff --git a/addons/crm/crm_phonecall_view.xml b/addons/crm/crm_phonecall_view.xml
index fe1b17e057b..1127270cbd0 100644
--- a/addons/crm/crm_phonecall_view.xml
+++ b/addons/crm/crm_phonecall_view.xml
@@ -101,7 +101,7 @@
 
                     <group col="4">
                         <field name="date"/>
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_sale_salesman_all_leads']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['base.group_sale_salesman_all_leads']}"/>
                         <field name="duration" widget="float_time"/>
                         <field name="section_id" colspan="1" widget="selection"
                                 groups="base.group_multi_salesteams"/>
@@ -135,7 +135,7 @@
                     on_change="onchange_partner_id(partner_id)"/>
                 <field name="partner_phone"
                     invisible="1"/>
-                <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_sale_salesman_all_leads']}"/>
+                <field name="user_id" context="{'default_groups_ref': ['base.group_sale_salesman_all_leads']}"/>
                 <field name="categ_id" widget="selection"
                     domain="[('object_id.model', '=', 'crm.phonecall')]"
                     invisible="1"/>
diff --git a/addons/crm/wizard/crm_opportunity_to_phonecall_view.xml b/addons/crm/wizard/crm_opportunity_to_phonecall_view.xml
index 83a61c491fb..09aa31b6b16 100644
--- a/addons/crm/wizard/crm_opportunity_to_phonecall_view.xml
+++ b/addons/crm/wizard/crm_opportunity_to_phonecall_view.xml
@@ -22,7 +22,7 @@
                         <group>
                             <field name="partner_id" readonly="True"/>
                             <field name="phone"/>
-                            <field name="user_id" attrs="{'invisible': [('action','=','log')]}" context="{'default_groups_ref': ['base.group_user', 'base.group_sale_salesman_all_leads']}"/>
+                            <field name="user_id" attrs="{'invisible': [('action','=','log')]}" context="{'default_groups_ref': ['base.group_sale_salesman_all_leads']}"/>
                             <field name="section_id" widget="selection" attrs="{'invisible': [('action','=','log')]}" groups="base.group_multi_salesteams"/>
                         </group>
                     </group>
diff --git a/addons/crm/wizard/crm_phonecall_to_phonecall_view.xml b/addons/crm/wizard/crm_phonecall_to_phonecall_view.xml
index 4ace1d8dd88..7bff451f9c3 100644
--- a/addons/crm/wizard/crm_phonecall_to_phonecall_view.xml
+++ b/addons/crm/wizard/crm_phonecall_to_phonecall_view.xml
@@ -14,7 +14,7 @@
                         <field name="name"/>
                         <field name="date" string="Planned Date" attrs="{'invisible': [('action','=','log')]}"/>
                         <field name="partner_id" readonly="True"/>
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_sale_salesman_all_leads']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['base.group_sale_salesman_all_leads']}"/>
                         <field name="section_id" groups="base.group_multi_salesteams"/>
                     </group>
                     <footer>
diff --git a/addons/crm_claim/crm_claim_view.xml b/addons/crm_claim/crm_claim_view.xml
index 929c8a2985d..a1491385db7 100644
--- a/addons/crm_claim/crm_claim_view.xml
+++ b/addons/crm_claim/crm_claim_view.xml
@@ -114,7 +114,7 @@
                         <field name="date"/>
                     </group>
                     <group colspan="4" col="4"  groups="base.group_user">
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_sale_salesman_all_leads']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['base.group_sale_salesman_all_leads']}"/>
                         <field name="priority"/>
                         <field name="section_id" groups="base.group_multi_salesteams"/>
                         <field name="date_deadline"/>
diff --git a/addons/crm_helpdesk/crm_helpdesk_view.xml b/addons/crm_helpdesk/crm_helpdesk_view.xml
index c8b843fb2a5..e5877a22274 100644
--- a/addons/crm_helpdesk/crm_helpdesk_view.xml
+++ b/addons/crm_helpdesk/crm_helpdesk_view.xml
@@ -49,7 +49,7 @@
                     <group col="4" class="oe_header">
                         <field name="name" string="Query"/>
                         <field name="section_id" widget="selection" groups="base.group_multi_salesteams"/>
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_sale_salesman_all_leads']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['base.group_sale_salesman_all_leads']}"/>
                         <field name="date"/>
                         <field name="date_deadline"/>
                     </group>
diff --git a/addons/crm_todo/crm_todo_view.xml b/addons/crm_todo/crm_todo_view.xml
index 947aba191ad..dd5387de11b 100644
--- a/addons/crm_todo/crm_todo_view.xml
+++ b/addons/crm_todo/crm_todo_view.xml
@@ -13,7 +13,7 @@
                     <field name="task_ids" colspan="4" nolabel="1">
                         <tree editable="bottom" string="Tasks">
                             <field name="name"/>
-                            <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'project.group_project_user']}"/>
+                            <field name="user_id" context="{'default_groups_ref': ['project.group_project_user']}"/>
 
                             <field string="Timebox" name="timebox_id"/>
                             <button name="prev_timebox" type="object" icon="gtk-go-back" string="Previous" states="draft,pending,open"/>
diff --git a/addons/document/document_view.xml b/addons/document/document_view.xml
index 0fdaa45f25f..5a9fcd6b989 100644
--- a/addons/document/document_view.xml
+++ b/addons/document/document_view.xml
@@ -11,7 +11,7 @@
                 <group col="4">
                     <field name="name"/>
                     <field name="parent_id"/>
-                    <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_document_user']}"/>
+                    <field name="user_id" context="{'default_groups_ref': ['base.group_document_user']}"/>
                     <field name="company_id" groups="base.group_multi_company" widget="selection"/>
                 </group>
                 <notebook colspan="4">
@@ -170,7 +170,7 @@
                 <field name="datas_fname" invisible="1"/>
             </xpath>
             <field name="url" position="after">
-                <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_document_user']}"/>
+                <field name="user_id" context="{'default_groups_ref': ['base.group_document_user']}"/>
             </field>
             <field name="company_id" position="before">
                 <field name="parent_id"/>
diff --git a/addons/document_page/document_page_view.xml b/addons/document_page/document_page_view.xml
index 93f80ecb772..cc18642d8d5 100644
--- a/addons/document_page/document_page_view.xml
+++ b/addons/document_page/document_page_view.xml
@@ -44,7 +44,7 @@
                             <field name="parent_id" on_change="onchange_parent_id(parent_id,content)" string="Category"/>
                         </group>
                         <group>
-                            <field name="write_uid" groups="base.group_no_one" context="{'default_groups_ref': ['base.group_user', 'base.group_document_user']}"/>
+                            <field name="write_uid" groups="base.group_no_one" context="{'default_groups_ref': ['base.group_document_user']}"/>
                             <field name="write_date" groups="base.group_no_one"/>
                             <field name="menu_id" groups="base.group_no_one"/>
                         </group>
diff --git a/addons/event/event_view.xml b/addons/event/event_view.xml
index 3125e03bea6..ad52221aa53 100644
--- a/addons/event/event_view.xml
+++ b/addons/event/event_view.xml
@@ -395,7 +395,7 @@
                             </group>
                             <group>
                                 <field name="nb_register"/>
-                                <field name="user_id" attrs="{'readonly':[('state','!=', 'draft')]}" context="{'default_groups_ref': ['base.group_user', 'event.group_event_manager']}"/>
+                                <field name="user_id" attrs="{'readonly':[('state','!=', 'draft')]}" context="{'default_groups_ref': ['event.group_event_manager']}"/>
                             </group>
                             <group groups="base.group_no_one">
                                 <field name="create_date"/>
diff --git a/addons/hr/hr_view.xml b/addons/hr/hr_view.xml
index ccd11bc0dc2..cd6ac5d7d48 100644
--- a/addons/hr/hr_view.xml
+++ b/addons/hr/hr_view.xml
@@ -49,8 +49,7 @@
                                     </group>
                                     <group>
                                         <field name="company_id" groups="base.group_multi_company" on_change="onchange_company(company_id)"/>
-                                        <field name="user_id" on_change="onchange_user(user_id)" string="Related User"
-                                            context="{'default_groups_ref': ['base.group_user']}"/>
+                                        <field name="user_id" on_change="onchange_user(user_id)" string="Related User"/>
                                     </group>
                                 </group>
                                 <field name="notes" placeholder="Other Information ..." colspan="4"/>
diff --git a/addons/hr_evaluation/hr_evaluation_view.xml b/addons/hr_evaluation/hr_evaluation_view.xml
index a17c540bd40..7004992d790 100644
--- a/addons/hr_evaluation/hr_evaluation_view.xml
+++ b/addons/hr_evaluation/hr_evaluation_view.xml
@@ -185,7 +185,7 @@
                                     <group>
                                         <field name="survey_id"/>
                                         <field name="user_to_review_id"/>
-                                        <field name="user_id" string="Interviewer" context="{'default_groups_ref': ['base.group_user', 'base.group_hr_manager']}"/>
+                                        <field name="user_id" string="Interviewer" context="{'default_groups_ref': ['base.group_hr_manager']}"/>
                                     </group>
                                     <group>              
                                         <field name="date_deadline"/>
@@ -308,7 +308,7 @@
                             <group>
                                 <field name="survey_id"/>
                                 <field name="user_to_review_id"/>
-                                <field name="user_id" string="Interviewer" context="{'default_groups_ref': ['base.group_user', 'base.group_hr_manager']}"/>
+                                <field name="user_id" string="Interviewer" context="{'default_groups_ref': ['base.group_hr_manager']}"/>
                             </group>
                             <group>
                                 <field name="date_deadline"/>
diff --git a/addons/hr_expense/hr_expense_view.xml b/addons/hr_expense/hr_expense_view.xml
index 9e9e543b1c5..5331431bfaa 100644
--- a/addons/hr_expense/hr_expense_view.xml
+++ b/addons/hr_expense/hr_expense_view.xml
@@ -80,7 +80,7 @@
                         </group>
                         <group>
                             <field name="name"/>
-                            <field name="user_valid" attrs="{'invisible': [('state','=','draft')]}" context="{'default_groups_ref': ['base.group_user', 'base.group_hr_user']}"/>
+                            <field name="user_valid" attrs="{'invisible': [('state','=','draft')]}" context="{'default_groups_ref': ['base.group_hr_user']}"/>
                             <field name="currency_id" groups="base.group_multi_currency" on_change="onchange_currency_id(currency_id, company_id)"/>
                         </group>
                     </group>
diff --git a/addons/hr_recruitment/hr_recruitment_view.xml b/addons/hr_recruitment/hr_recruitment_view.xml
index b531677d538..bcafe123c96 100644
--- a/addons/hr_recruitment/hr_recruitment_view.xml
+++ b/addons/hr_recruitment/hr_recruitment_view.xml
@@ -108,7 +108,7 @@
                     </group>
                     <group>
                         <field name="user_id" 
-                            context="{'default_groups_ref': ['base.group_user', 'base.group_hr_manager']}"/>
+                            context="{'default_groups_ref': ['base.group_hr_manager']}"/>
                         <label for="title_action"/>
                         <div>
                             <field name="date_action"/>
diff --git a/addons/hr_timesheet/hr_timesheet_view.xml b/addons/hr_timesheet/hr_timesheet_view.xml
index cf4289c92b7..6edd2a74eea 100644
--- a/addons/hr_timesheet/hr_timesheet_view.xml
+++ b/addons/hr_timesheet/hr_timesheet_view.xml
@@ -8,8 +8,7 @@
             <field name="arch" type="xml">
                 <tree editable="top" string="Timesheet Activities">                  
                     <field name="date" on_change="on_change_date(date)"/>
-                    <field name="user_id" on_change="on_change_user_id(user_id)" required="1" options='{"no_open": True}'
-                        context="{'default_groups_ref': [base.group_user']}"/>
+                    <field name="user_id" on_change="on_change_user_id(user_id)" required="1" options='{"no_open": True}'/>
                     <field name="name"/>
                     <field domain="[('type','=','normal'),('use_timesheets','=',1)]" name="account_id" context="{'default_use_timesheets': 1, 'default_type': 'contract'}"/>
                     <field name="unit_amount" string="Duration" on_change="on_change_unit_amount(product_id, unit_amount, False, product_uom_id,journal_id)" sum="Total time" widget="float_time"/>
@@ -30,8 +29,7 @@
                     <group>
                         <group>
                             <field name="name"/>
-                            <field name="user_id" on_change="on_change_user_id(user_id)" required="1"
-                                context="{'default_groups_ref': ['base.group_user']}"/>
+                            <field name="user_id" on_change="on_change_user_id(user_id)" required="1"/>
                         </group>
                         <group>
                             <field name="date" on_change="on_change_date(date)"/>
diff --git a/addons/lunch/lunch_view.xml b/addons/lunch/lunch_view.xml
index 2f3af2f461d..5fb5917ac03 100644
--- a/addons/lunch/lunch_view.xml
+++ b/addons/lunch/lunch_view.xml
@@ -325,7 +325,7 @@
                         <group>
                             <group>
                                 <field name='user_id'
-                                context="{'default_groups_ref': ['base.group_user', 'lunch.group_lunch_user']}"/>
+                                context="{'default_groups_ref': ['lunch.group_lunch_user']}"/>
                             </group>
                             <group> 
                                 <field name='date'/>
@@ -411,7 +411,7 @@
                     <sheet>
                         <group>
                             <field name="user_id"
-                                context="{'default_groups_ref': ['base.group_user', 'lunch.group_lunch_user']}"/>
+                                context="{'default_groups_ref': ['lunch.group_lunch_user']}"/>
                             <field name="date"/>
                             <field name="amount"/>
                         </group>
diff --git a/addons/mrp/mrp_view.xml b/addons/mrp/mrp_view.xml
index 2bf0afd6da5..e6ba37dd5fd 100644
--- a/addons/mrp/mrp_view.xml
+++ b/addons/mrp/mrp_view.xml
@@ -656,7 +656,7 @@
                         <group>
                             <field name="bom_id" domain="[('product_id','=',product_id)]" context="{'default_product_id': product_id}" on_change="bom_id_change(bom_id)" required="1"/>
                             <field name="routing_id" class="oe_inline" groups="mrp.group_mrp_routings"/>
-                            <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'mrp.group_mrp_user']}"/>
+                            <field name="user_id" context="{'default_groups_ref': ['mrp.group_mrp_user']}"/>
                             <field name="origin"/>
                         </group>
                         <group groups="stock.group_locations">
diff --git a/addons/point_of_sale/point_of_sale_view.xml b/addons/point_of_sale/point_of_sale_view.xml
index 6747a8839ce..5b23e94ca23 100644
--- a/addons/point_of_sale/point_of_sale_view.xml
+++ b/addons/point_of_sale/point_of_sale_view.xml
@@ -85,7 +85,7 @@
                             <group string="General Information">
                                 <field name="company_id" groups="base.group_multi_company"/>
                                 <field name="shop_id" widget="selection"/>
-                                <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'point_of_sale.group_pos_user']}"/>
+                                <field name="user_id" context="{'default_groups_ref': ['point_of_sale.group_pos_user']}"/>
                                 <field name="pricelist_id" groups="product.group_sale_pricelist" domain="[('type','=','sale')]"/>
                                 <field name="picking_id" readonly="1"/>
                                 <field name="pos_reference"/>
@@ -893,7 +893,7 @@
                         <group>
                             <field name="cash_control" invisible="1" />
                             <group>
-                                <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'point_of_sale.group_pos_manager', 'base.group_sale_manager']}"/>
+                                <field name="user_id" context="{'default_groups_ref': ['point_of_sale.group_pos_manager', 'base.group_sale_manager']}"/>
                                 <field name="config_id"/>
                             </group>
                             <group>
diff --git a/addons/product/product_view.xml b/addons/product/product_view.xml
index cefdf1f7787..45a6fa13c87 100644
--- a/addons/product/product_view.xml
+++ b/addons/product/product_view.xml
@@ -110,7 +110,7 @@
                                     <group name="status" string="Status">
                                         <field name="state"/>
                                         <field name="product_manager"
-                                        context="{'default_groups_ref': ['base.group_user', 'base.group_sale_manager']}"/>
+                                        context="{'default_groups_ref': ['base.group_sale_manager']}"/>
                                     </group>
                                     <group name="Weights" groups="product.group_stock_packaging" string="Weights">
                                         <field digits="(14, 3)" name="volume" attrs="{'readonly':[('type','=','service')]}"/>
@@ -722,7 +722,7 @@
                             <group name="status" string="Status">
                                 <field name="categ_id"/>
                                 <field name="state"/>
-                                <field name="product_manager" context="{'default_groups_ref': ['base.group_user', 'base.group_sale_manager']}"/>
+                                <field name="product_manager" context="{'default_groups_ref': ['base.group_sale_manager']}"/>
                             </group>
 
                             <group name="uom" string="Unit of Measure">
diff --git a/addons/project/project_view.xml b/addons/project/project_view.xml
index 2ae898e7ffb..cc6daa0c4f1 100644
--- a/addons/project/project_view.xml
+++ b/addons/project/project_view.xml
@@ -114,7 +114,7 @@
                             <field name="privacy_visibility"/>
                             <field name="user_id" string="Project Manager" 
                                 attrs="{'readonly':[('state','in',['close', 'cancelled'])]}" 
-                                context="{'default_groups_ref': ['base.group_user', 'project.group_project_manager']}"/>
+                                context="{'default_groups_ref': ['project.group_project_manager']}"/>
                         </group>
                         <group>
                             <field name="partner_id" on_change="onchange_partner_id(partner_id)"/>
@@ -335,7 +335,7 @@
                         <field colspan="4" name="name"/>
                         <field name="hours" widget="float_time"/>
                         <field name="date"/>
-                        <field name="user_id" options='{"no_open": True}' context="{'default_groups_ref': ['base.group_user', 'project.group_project_user']}"/>
+                        <field name="user_id" options='{"no_open": True}' context="{'default_groups_ref': ['project.group_project_user']}"/>
                         <field name="company_id" groups="base.group_multi_company" widget="selection"/>
                     </group>
                 </form>
@@ -350,7 +350,7 @@
                     <field name="date"/>
                     <field name="name"/>
                     <field name="hours" widget="float_time"/>
-                    <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'project.group_project_user']}"/>
+                    <field name="user_id" context="{'default_groups_ref': ['project.group_project_user']}"/>
                 </tree>
             </field>
         </record>
@@ -392,7 +392,7 @@
                             <field name="user_id" 
                                 attrs="{'readonly':[('state','in',['done', 'cancelled'])]}" 
                                 options='{"no_open": True}'
-                                context="{'default_groups_ref': ['base.group_user', 'project.group_project_user']}"/>
+                                context="{'default_groups_ref': ['project.group_project_user']}"/>
                             <field name="planned_hours" widget="float_time"
                                     groups="project.group_time_work_estimation_tasks"
                                     on_change="onchange_planned(planned_hours, effective_hours)"/>
@@ -412,7 +412,7 @@
                                     <field name="name"/>
                                     <field name="hours" widget="float_time" sum="Spent Hours"/>
                                     <field name="date"/>
-                                    <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'project.group_project_user']}"/>
+                                    <field name="user_id" context="{'default_groups_ref': ['project.group_project_user']}"/>
                                 </tree>
                             </field>
                             <group>
diff --git a/addons/project/res_partner_view.xml b/addons/project/res_partner_view.xml
index 3545664ce01..301f8a0a349 100644
--- a/addons/project/res_partner_view.xml
+++ b/addons/project/res_partner_view.xml
@@ -16,7 +16,7 @@
                         <field name="task_ids" colspan="4" nolabel="1">
                             <tree string="Tasks" editable="bottom">
                                 <field name="name"/>
-                                <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'project.group_project_user']}"/>
+                                <field name="user_id" context="{'default_groups_ref': ['project.group_project_user']}"/>
                                 <field name="date_deadline"/>
                                 <field name="state" invisible="1"/>
                                 <button name="do_open" states="pending,draft,done,cancelled" string="Start Task" type="object" icon="gtk-media-play" help="For changing to open state" invisible="context.get('set_visible',False)"/>
diff --git a/addons/project/wizard/project_task_delegate_view.xml b/addons/project/wizard/project_task_delegate_view.xml
index 4f2954e2f20..f33098fd84e 100644
--- a/addons/project/wizard/project_task_delegate_view.xml
+++ b/addons/project/wizard/project_task_delegate_view.xml
@@ -17,7 +17,7 @@
                             <field name="new_task_description" colspan="2" nolabel="1"/>
                         </group>
                         <group>
-                            <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'project.group_project_user']}"/>
+                            <field name="user_id" context="{'default_groups_ref': ['project.group_project_user']}"/>
                             <separator string="Validation Task" colspan="2"/>
                             <field name="prefix" string="Validation Task Title"/>
                             <field name="planned_hours_me"/>
diff --git a/addons/project_issue/project_issue_view.xml b/addons/project_issue/project_issue_view.xml
index f888ff9da77..60168624404 100644
--- a/addons/project_issue/project_issue_view.xml
+++ b/addons/project_issue/project_issue_view.xml
@@ -70,7 +70,7 @@
                     <group>
                         <group groups="base.group_user">
                             <field name="user_id" 
-                                context="{'default_groups_ref': ['base.group_user', 'project.group_project_user']}"/>
+                                context="{'default_groups_ref': ['project.group_project_user']}"/>
                             <field name="partner_id"  on_change="onchange_partner_id(partner_id, email_from)"/>
                             <field name="email_from"/>
                             <label for="project_id" groups="base.group_user"/>
diff --git a/addons/project_issue_sheet/project_issue_sheet_view.xml b/addons/project_issue_sheet/project_issue_sheet_view.xml
index 9f42dd45a79..fb245a0510a 100644
--- a/addons/project_issue_sheet/project_issue_sheet_view.xml
+++ b/addons/project_issue_sheet/project_issue_sheet_view.xml
@@ -25,7 +25,7 @@
                                 <field name="unit_amount" on_change="on_change_unit_amount(product_id, unit_amount, False, product_uom_id,journal_id)" widget="float_time"/>
                                 <field name="account_id" invisible="0" domain="[('partner_id', '=', parent.partner_id)]" on_change="on_change_account_id(account_id)" groups="analytic.group_analytic_accounting"/>
                                 <field name="date"/>
-                                <field name="user_id" context="{'default_groups_ref': ['base.group_user']}"/>
+                                <field name="user_id"/>
                                 <field invisible="1" name="journal_id"/>
                                 <field invisible="1" name="product_id"/>
                                 <field invisible="1" name="product_uom_id" on_change="on_change_unit_amount(product_id, unit_amount, False, product_uom_id,journal_id)"/>
diff --git a/addons/project_long_term/project_long_term_view.xml b/addons/project_long_term/project_long_term_view.xml
index fe86f21f4ba..4b0acd2a6c1 100644
--- a/addons/project_long_term/project_long_term_view.xml
+++ b/addons/project_long_term/project_long_term_view.xml
@@ -33,7 +33,7 @@
             <field name="arch" type="xml">
                 <form string="Project User Allocation" version="7.0">
                     <group col="4">
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'project.group_project_manager']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['project.group_project_manager']}"/>
                         <field name="phase_id"/>
                         <field name="project_id"/>
                         <field name="date_start"/>
@@ -174,7 +174,7 @@
                         <page string="Team Planning">
                             <field name="user_ids">
                                  <tree editable="bottom" string="Project Users">
-                                      <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'project.group_project_manager']}"/>
+                                      <field name="user_id" context="{'default_groups_ref': ['project.group_project_manager']}"/>
                                       <field name="date_start"/>
                                       <field name="date_end"/>
                                   </tree>
diff --git a/addons/purchase/purchase_view.xml b/addons/purchase/purchase_view.xml
index 2b209161480..eece0b52727 100644
--- a/addons/purchase/purchase_view.xml
+++ b/addons/purchase/purchase_view.xml
@@ -244,7 +244,7 @@
                                     <field name="payment_term_id" widget="selection"/>
                                     <field name="fiscal_position" attrs="{'readonly': [('invoiced','=', True)]}" />
                                     <!-- We do not need these fields anymore, the information is in open chatter -->
-                                    <field name="validator" groups="base.group_no_one" context="{'default_groups_ref': ['base.group_user', 'purchase.group_purchase_user', 'account.group_account_invoice']}"/>
+                                    <field name="validator" groups="base.group_no_one" context="{'default_groups_ref': ['purchase.group_purchase_user', 'account.group_account_invoice']}"/>
                                     <field name="date_approve" groups="base.group_no_one"/>
                                 </group>
                             </group>
diff --git a/addons/purchase_requisition/purchase_requisition_view.xml b/addons/purchase_requisition/purchase_requisition_view.xml
index e1cb52cc7a1..70461a6711b 100644
--- a/addons/purchase_requisition/purchase_requisition_view.xml
+++ b/addons/purchase_requisition/purchase_requisition_view.xml
@@ -48,7 +48,7 @@
                 </h1>
                 <group>
                     <group>
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'purchase_requisition.group_purchase_requisition_user', 'purchase.group_purchase_user', 'account.group_account_invoice']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['purchase_requisition.group_purchase_requisition_user', 'purchase.group_purchase_user', 'account.group_account_invoice']}"/>
                         <field name="exclusive"/>
                     </group>
                     <group>
diff --git a/addons/sale/sale_view.xml b/addons/sale/sale_view.xml
index 197aeb689a6..cc43dc01b56 100644
--- a/addons/sale/sale_view.xml
+++ b/addons/sale/sale_view.xml
@@ -256,7 +256,7 @@
                         <page string="Other Information" groups="base.group_user">
                             <group>
                                 <group name="sales_person" groups="base.group_user">
-                                    <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_invoice', 'base.group_sale_salesman_all_leads']}"/>
+                                    <field name="user_id" context="{'default_groups_ref': ['account.group_account_invoice', 'base.group_sale_salesman_all_leads']}"/>
                                     <field groups="base.group_no_one" name="origin"/>
                                 </group>
                                 <group name="sale_pay">
diff --git a/addons/stock/product_view.xml b/addons/stock/product_view.xml
index 68a93d53e6f..1ab8fab77e6 100644
--- a/addons/stock/product_view.xml
+++ b/addons/stock/product_view.xml
@@ -61,7 +61,7 @@
                     </page>
                 </page>
                 <field name="product_manager" position="attributes" version="7.0">
-                    <attribute name="context">{'default_groups_ref': ['base.group_user', 'base.group_sale_manager','stock.group_stock_manager']}</attribute>
+                    <attribute name="context">{'default_groups_ref': ['base.group_sale_manager','stock.group_stock_manager']}</attribute>
                 </field>
             </field>
         </record>
@@ -128,7 +128,7 @@
                      </group>
                 </group>
                 <field name="product_manager" position="attributes" version="7.0">
-                    <attribute name="context">{'default_groups_ref': ['base.group_user', 'base.group_sale_manager','stock.group_stock_manager']}</attribute>
+                    <attribute name="context">{'default_groups_ref': ['base.group_sale_manager','stock.group_stock_manager']}</attribute>
                 </field>
             </field>
         </record>
diff --git a/addons/stock/stock_view.xml b/addons/stock/stock_view.xml
index 8c259505ac6..4fabba18428 100644
--- a/addons/stock/stock_view.xml
+++ b/addons/stock/stock_view.xml
@@ -1686,7 +1686,7 @@
                 <form string="Stock Journal" version="7.0">
                     <group>
                         <field name="name"/>
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_invoice', 'stock.group_stock_manager']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['account.group_account_invoice', 'stock.group_stock_manager']}"/>
                     </group>
                 </form>
             </field>
diff --git a/addons/subscription/subscription_view.xml b/addons/subscription/subscription_view.xml
index b1d66310e12..2a4d47d7863 100644
--- a/addons/subscription/subscription_view.xml
+++ b/addons/subscription/subscription_view.xml
@@ -21,7 +21,7 @@
                     <group col="4">
                         <field name="name"/>
                         <field name="partner_id"/>
-                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'account.group_account_invoice', 'base.group_tool_user']}"/>
+                        <field name="user_id" context="{'default_groups_ref': ['account.group_account_invoice', 'base.group_tool_user']}"/>
                         <field name="active"/>
                     </group>
                     <notebook>
diff --git a/addons/survey/survey_view.xml b/addons/survey/survey_view.xml
index a38aaaa66aa..114e52804fc 100644
--- a/addons/survey/survey_view.xml
+++ b/addons/survey/survey_view.xml
@@ -44,7 +44,7 @@
                     <group>
                         <group>
                             <field name="id" invisible="1"/>
-                            <field name="responsible_id" class="oe_inline" attrs="{'readonly':[('state','=','close')]}" context="{'default_groups_ref': ['base.group_user', 'base.group_tool_user', 'base.group_tool_manager']}"/>
+                            <field name="responsible_id" class="oe_inline" attrs="{'readonly':[('state','=','close')]}" context="{'default_groups_ref': ['base.group_tool_user', 'base.group_tool_manager']}"/>
                             <field name="type" attrs="{'readonly':[('state','=','close')]}" class="oe_inline"/>
                             <field name="send_response" attrs="{'readonly':[('state','=','close')]}"/>
                         </group>
@@ -1011,7 +1011,7 @@
                 <form string="Survey Answer">
                     <field name="survey_id"/>
                     <field name="date_create"/>
-                    <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_tool_user', 'base.group_tool_manager']}"/>
+                    <field name="user_id" context="{'default_groups_ref': ['base.group_tool_user', 'base.group_tool_manager']}"/>
                     <field name="response_type"/>
                     <field name="question_ids" nolabel="1" colspan="4" />
                     <field name="state"/>
@@ -1124,7 +1124,7 @@
                     <group class="oe_header">
                     <field name="date_deadline"/>
                     <field name="survey_id"/>
-                    <field name="user_id" on_change="on_change_user(user_id)" context="{'default_groups_ref': ['base.group_user', 'base.group_tool_user', 'base.group_tool_manager']}"/>
+                    <field name="user_id" on_change="on_change_user(user_id)" context="{'default_groups_ref': ['base.group_tool_user', 'base.group_tool_manager']}"/>
                     <field name="email"/>
                     <field name="response" readonly="1"/>
                     </group>