I've set up some special ranks, but there seems to be no way I can assign them to individual users. I can only assign the special ranks to be the default ranks for groups when members are newly added to them, but cannot assign special ranks individually to any member.
The only problem is, once I do the 'ACP --> Users and Groups --> Find the user -->' bit, there isn't any 'assign rank' option. There's not a single word that looks remotely like 'rank'. Or I wouldn't have posted it here.