on *:TEXT:!setevent *:#: {
  if ($nick isop $chan || $nick ishop $chan) {
    set %event %2-
    set %nick $nick
    msg $chan the event has been changed use !event to see the event.
  }
}

on *:TEXT:!event:#: {
  notice $nick the events for today are: %event Set by: %nick
}