title: Odoo: Make a statusbar button invisible to a group of users
body: <p>I would like the button (draft) to be visible just by a simple user group and not by the group manager. but since the manager is first a simple user before being a manager, how to do it?</p>
  
  <p>Here's the button</p>
  
  <p><code>&lt;button name="button_draft" string="Draft" states="refuse,approve" type="object"/&gt;</code></p>
  
  <p>Thank you for your help</p>