nicklists are pretty easy to do actually. just depends on how you wanna go about it. you would have to change the name of the dialog in the variable and the other info on it but keep the while and the var-s line and this will get you the nicks from the channel the dialog is opened on

alias  nickzz2 {
  var -s %curr 1, %nick $nick($active,0)
  did -r roomsettings.system 131
  while (%curr <= %nick) { 
    did -az roomsettings.system 131 $nick($active,%curr)
    did -az roomsettings.system 218 $nick($active,%curr)
    did -az roomsettings.system 233 $nick($active,%curr)
    inc %curr
  }
}

and if you want to maybe add a channel to it to make it easier that way you could do

 didtok -az $dname 202 32 $regsubex($str(-,$chan(0)),/./g,$chan(\n) $chr(32)) 

again change the info excet the $regsubex part and it will list the channels for you in the dialog wherever you specify