Thread:Sannse/@comment-17720352-20130629211320/@comment-409884-20130630144834

Since you are the Founders you are a Bureaucrat and would use the Special:UserRights page --  it will ask you to enter the user name  in the box and then below you have options -- you will put a  mark by the  Sysop or Admin  if you want them to be admins of your wiki --  or  rollback if you want them to have  Rollback ability  and so forth.

P.S. Be sure to save it (bottom of page) or they will not get the options.