title: How do I create my own custom group in mediawiki?
body: <p>I have been reading carefully through the mediawiki documentation but I have not been able to find out how to create new groups. </p>
  
  <p>When I look at Special:Userrights, I see only 3 groups : 
  Bots, Sysops, Bureaycrats</p>
  
  <p>I would like to create my own custom groups, so I can use some extensions like the <a href="http://www.mediawiki.org/wiki/Extension:Group_Based_Access_Control" rel="noreferrer">http://www.mediawiki.org/wiki/Extension:Group_Based_Access_Control</a>.</p>
  
  <p>Can someone tell me how it's done, or point me to some documentation?</p>