Board Thread:Support Requests - Designing Your Wikia/@comment-11008902-20140411001313/@comment-366087-20140412112250

You can add them either as "Vanity" Tags only, using codes such as UserTags, or by asking via Special:Contact for custom groups for your wiki, even assigning them select tools from the Special:ListGroupRights such as and maybe
 * forum (forum)
 * forumadmin (forumadmin)
 * forumoldedit (forumoldedit)
 * commentdelete (commentdelete)
 * commentedit (commentedit)
 * commentmove (commentmove)

Check Elder Scrolls for their ListGroupRights to see what toolsets they implemented.