cooperative-market/beesdoo_shift/wizard/holiday.xml

<odoo>
    <record model="ir.ui.view" id="holiday_coop_wizard_view_form">
        <field name="name">Holiday Management</field>
        <field name="model">beesdoo.shift.holiday</field>
        <field name="arch" type="xml">
            <form>
                <field name="cooperator_id" invisible="1"/>
                <group>
                    <field name="holiday_start_day" />
                    <field name="holiday_end_day" />
                </group>
                <footer>
                    <button type="object" name="holidays"
                        string="Confirm" class="oe_highlight" />
                    <button special="cancel" string="Cancel" />
                </footer>
            </form>
        </field>
    </record>
</odoo>