They have more access to Special : UserRights , letting them to add users to the ` sysop ' ( or use Special : MakeSysop ) and ` bureaucrat ' groups ( but not remove them ) , and can add or remove users from the ` bot ' user group .
Bureaucrats have extended access to Special : UserRights , enabling them to add users to the ` sysop ' and ` bureaucrat ' groups ( but not remove them ) , and both add users to and remove users from the ` bot ' user group .