Something

[script]
on *:TEXT:!av*:#pcc: {
  if ($nick isop $chan || $nick ishop $chan) { 
    if ($$2 ison $chan) {
      guser 3 $$2 3
      mode #pcc +v $$2
      notice #pcc  $nick has been added to #pcmaster's AVOICE list.
    }
    else {
      notice $nick  $+ $$2 must be in the channel to be added to the AVOICE list!
    }
  }
}
on 3:JOIN:#pcc: { 
  /mode $chan +v $nick
}