[Solved] How to add a button to the Action menu?
Use key2=”client_action_multi” in act_window to add submenu to “Action” button (“More” in previous Odoo versions). Reference here <act_window name=”New Sub menu” res_model=”product.product” src_model=”product.product” key2=”client_action_multi” view_mode=”form” target=”new” view_type=”form” id=”act_new_sub_menu” /> solved How to add a button to the Action menu?