odoo/addons/mail/mail_group_view.xml

<?xml version="1.0"?>
<openerp>
    <data>
        
       <!-- Group Kanban View  !-->
        <record model="ir.ui.view" id="view_group_kanban">
            <field name="name">mail.group.kanban</field>
            <field name="model">mail.group</field>
            <field name="type">kanban</field>
            <field name="priority" eval="10"/>
            <field name="arch" type="xml">
                <kanban>
                    <templates>
                        <t t-name="kanban-box">
                            <div class="oe_group_vignette">
                                <div class="oe_group_image">
                                    Image
                                </div>
                                <div class="oe_group_details">
                                    <h4><a type="edit"><field name="name"/></a></h4>
                                    <ul>
                                        <li><a name="action_group_join" string="Join" type="object">Join</a></li>
                                        <li>Joined</li>
                                    </ul>
                                </div>
                            </div>
                        </t>
                    </templates>
                </kanban>
            </field>
        </record>

        <!-- Group Form View !-->
        <record  model="ir.ui.view" id="view_group_form">
            <field name="name">mail.group.form</field>
            <field name="model">mail.group</field>
            <field name="type">form</field>
            <field name="priority" eval="10"/>
            <field name="arch" type="xml">
                <form string="Group">
                    <field name="name" colspan="2"/>
                    <field name="responsible_id" colspan="2"/>
                    <newline/>
                    <field name="description" colspan="4"/>
                    <newline/>
                    <separator string="Privacy settings" colspan="4"/>
                    <group colspan="2" col="4">
                        <field name="public" nolabel="1" colspan="1"/>
                        <label string="This group is visible by non members" colspan="2"/>
                    </group>
                    <separator string="Test actions" colspan="4"/>
                    <button name="action_null" string="Test2" type="object" icon="gtk-go-forward" colspan="2"/>
                    <field name="message_ids_social" colspan="4" widget="ThreadView" nolabel="1"/>
                </form>
            </field>
        </record>

        <!-- group record !-->
        <record id="action_view_groups" model="ir.actions.act_window">
            <field name="name">Groups</field>
            <field name="res_model">mail.group</field>
            <field name="view_type">form</field>
            <field name="view_mode">kanban,tree,form</field>
        </record>

    </data>
</openerp>