diff --git a/addons/sale_timesheet/models/project.py b/addons/sale_timesheet/models/project.py
index 38a9111f74c..4c12a88d3bf 100644
--- a/addons/sale_timesheet/models/project.py
+++ b/addons/sale_timesheet/models/project.py
@@ -124,8 +124,8 @@ class ProjectTask(models.Model):
     def _get_default_partner(self):
         partner = False
         if 'default_project_id' in self.env.context:  # partner from SO line is prior on one from project
-            project = self.env['project.project'].browse(self.env.context['default_project_id'])
-            partner = project.sale_line_id.order_partner_id
+            project_sudo = self.env['project.project'].browse(self.env.context['default_project_id']).sudo()
+            partner = project_sudo.sale_line_id.order_partner_id
         if not partner:
             partner = super(ProjectTask, self)._get_default_partner()
         return partner
@@ -205,7 +205,7 @@ class ProjectTask(models.Model):
     @api.multi
     @api.constrains('sale_line_id')
     def _check_sale_line_type(self):
-        for task in self:
+        for task in self.sudo():
             if task.sale_line_id:
                 if not task.sale_line_id.is_service or task.sale_line_id.is_expense:
                     raise ValidationError(_('You cannot link the order item %s - %s to this task because it is a re-invoiced expense.' % (task.sale_line_id.order_id.id, task.sale_line_id.product_id.name)))
diff --git a/addons/sale_timesheet/views/project_task_views.xml b/addons/sale_timesheet/views/project_task_views.xml
index 34ca4eb5a8c..af077f03b1e 100644
--- a/addons/sale_timesheet/views/project_task_views.xml
+++ b/addons/sale_timesheet/views/project_task_views.xml
@@ -61,13 +61,6 @@
             <field name="groups_id" eval="[(4, ref('base.group_user'))]"/>
             <field name="inherit_id" ref="project.view_task_form2"/>
             <field name="arch" type="xml">
-                <xpath expr="//button[@name='toggle_active']" position="before">
-                    <button type="object" name="action_view_so"
-                            class="oe_stat_button" icon="fa-dollar"
-                            attrs="{'invisible': [('sale_order_id', '=', False)]}"
-                            string="Sales Order"/>
-                    <field name="sale_order_id" invisible="1"/>
-                </xpath>
                 <field name="user_id" position="after">
                     <field name="sale_line_id" string="Sales Order Item" attrs="{'invisible': ['|', ('partner_id', '=', False)]}" options='{"no_create": True}' context="{'create': False, 'edit': False, 'delete': False}"/>
                     <field name="billable_type" invisible="1"/>
@@ -75,6 +68,22 @@
             </field>
         </record>
 
+    <record id="project_task_view_form_sale_order" model="ir.ui.view">
+        <field name="name">project.task.form.inherit.sale.order</field>
+        <field name="model">project.task</field>
+        <field name="inherit_id" ref="project.view_task_form2"/>
+        <field name="arch" type="xml">
+            <xpath expr="//button[@name='toggle_active']" position="before">
+                <button type="object" name="action_view_so"
+                        class="oe_stat_button" icon="fa-dollar"
+                        attrs="{'invisible': [('sale_order_id', '=', False)]}"
+                        string="Sales Order"/>
+                <field name="sale_order_id" invisible="1"/>
+            </xpath>
+        </field>
+        <field name="groups_id" eval="[(4, ref('sales_team.group_sale_salesman'))]"/>
+    </record>
+
     <record id="project_task_view_search" model="ir.ui.view">
         <field name="name">project.task.search.inherit</field>
         <field name="model">project.task</field>