title: How to find which security permission is preventing a user from doing something
body: <p>Dynamics CRM 2011 on premise.</p>
  
  <p>I have a plugin that adds some buttons to the ribbon on the case/incident form.</p>
  
  <p>Different users have different security permissions.</p>
  
  <p>The buttons are enabled for all users.</p>
  
  <p>When some users press the buttons they perform the expected operations.</p>
  
  <p>When other users press the buttons they do not seem to do anything.</p>
  
  <p>Other than permissions, I think everything else is the same for the users.</p>
  
  <p>How can I find which permission(s) are causing the problem?</p>
  
  <p>(Also, shouldn't CRM say something if permissions are blocking a user from doing something? We don't get an error.)</p>