Disallow namesAdmin Panel - User Admin - Disallow Names
Add a disallowed user name
If you wish to ban a user name or anything like it this is the place to enter it.
For example if you do not want a user to be called Paul Skinback (think about it) then you can just enter this name in the list.
Remove a Disallowed User name
If you no longer wish that user name to be banned then you can unban it by clicking on it ere and clicking submit