/msg $C ADDUSER <#channel> <nick|*account> <level>
This command adds someone to the channel user list with the specified access level.  (You may only add users to levels less than your own.)
The level may be one of $bpeon$b, $bop$b, $bmaster$b, $bcoowner$b, $bowner$b, or a number between 1 and 500.  Only network staff may add level 500 users (owners).
$uSee Also:$u deluser, users