diff --git a/addons/base_calendar/wizard/base_calendar_invite_attendee_view.xml b/addons/base_calendar/wizard/base_calendar_invite_attendee_view.xml
index 5510259a7a7..e3f07fee833 100644
--- a/addons/base_calendar/wizard/base_calendar_invite_attendee_view.xml
+++ b/addons/base_calendar/wizard/base_calendar_invite_attendee_view.xml
@@ -9,27 +9,28 @@
             <field name="model">base_calendar.invite.attendee</field>
             <field name="arch" type="xml">
                 <form string="Invite People" version="7.0">
-                    <separator string="Invite People" colspan="4"/>
-                    <field name="type"/>
-                    <field name="send_mail"/>
-                    <notebook colspan="4">
-                        <page string="Data">
-                            <group col="2" colspan="6" attrs="{'invisible': [('type', '!=', 'external')]}">
-                                <field name="email" colspan="4" attrs="{'required': [('type', '=', 'external')]}"/>
-                            </group>
-                            <group col="2" colspan="6" attrs="{'invisible': [('type', '!=', 'internal')]}">
-                                <separator string="Users" colspan="4"/>
-                                <field name="user_ids"  colspan="4" nolabel="1"  height="180"/>
-                                <newline/>
-                            </group>
-                            <group col="2" colspan="6" attrs="{'invisible': [('type', '!=', 'partner')]}">
-                                <field name="partner_id" colspan="2" on_change="onchange_partner_id(partner_id)" attrs="{'required': [('type', '=', 'partner')]}"/>
-                                <newline/>
-                                <separator string="Partner Contacts" colspan="6"/>
-                                <field name="contact_ids"  colspan="4" nolabel="1" domain="[('id', 'child_of', [partner_id])]" attrs="{'readonly': [('type', '!=', 'partner')]}"/>
-                            </group>
-                        </page>
-                    </notebook>
+                    <group>
+                        <group>
+                            <field name="type"/>
+                        </group>
+                        <group>
+                            <field name="send_mail"/>
+                        </group>
+                    </group>
+                    <group col="2" colspan="6" attrs="{'invisible': [('type', '!=', 'external')]}">
+                        <field name="email" colspan="4" attrs="{'required': [('type', '=', 'external')]}"/>
+                    </group>
+                    <group col="2" colspan="6" attrs="{'invisible': [('type', '!=', 'internal')]}">
+                        <separator string="Users" colspan="4"/>
+                        <field name="user_ids"  colspan="4" nolabel="1"  height="180"/>
+                        <newline/>
+                    </group>
+                    <group col="2" colspan="6" attrs="{'invisible': [('type', '!=', 'partner')]}">
+                        <field name="partner_id" colspan="2" on_change="onchange_partner_id(partner_id)" attrs="{'required': [('type', '=', 'partner')]}"/>
+                        <newline/>
+                        <separator string="Partner Contacts" colspan="6"/>
+                        <field name="contact_ids"  colspan="4" nolabel="1" domain="[('id', 'child_of', [partner_id])]" attrs="{'readonly': [('type', '!=', 'partner')]}"/>
+                    </group>
                     <footer>
                         <button name="do_invite" string="Invite" type="object" class="oe_highlight"/>
                         or