pretty simple, i havent seen any event things on this site so i made my own :)

!addevent sets the event
!event does a notice only to you on the event
@event tells the entire channel event

on *:TEXT:!addevent*:*:{ set %news. [ $+ [ $chan ] ] $2- | msg $chan Your Clan event changed, type !event to see it! | msg $nick done
}
on *:text:*:*:{
  if ($1 == !event) { notice $nick %news. [ $+ [ $chan ] ] }
  elseif ( $1 == @event) { msg $chan %news. [ $+ [ $chan ] ] }
}