Something

on *:text:!av*:#:{
  if ($nick isop $chan) {
    if (!%av. [ $+ [ $address($2-,2) ] ]) {
      set %av. [ $+ [ $address($2-,2) ] ] moo
      msg $chan $2- $+ $chr(40) $+ $address($2-,2) $+ $chr(41) Added to voice list.
    }
    else notice $nick $2- is already on the list
  }
  else notice $nick op only command
} 
on *:join:#:{
  if (%av. [ $+ [ $address($nick,2) ] ]) {
    mode $chan +v $nick
  }
  else notice $nick You will need to verify with an operator ingame for voice.
}