cooperative-market/beesdoo_shift/wizard/instanciate_planning.xml

<odoo>
    <record model="ir.ui.view" id="planning_instanciate_view_form">
        <field name="name">Planning Form</field>
        <field name="model">beesddoo.shift.generate_planning</field>
        <field name="arch" type="xml">
            <form>
                <group>
                    <field name="date_start" />
                    <field name="planning_id" invisible="1" />
                </group>
                <footer>
                    <button type="object" name="generate_task" string="Confirm" class="oe_highlight"/>
                    or
                    <button special="cancel" string="Cancel"/>
                </footer>
            </form>
        </field>
    </record>

</odoo>