Something

on *:text:!setevent*:#: {
if ($nick isop $chan || $Nick ishop $chan) {
set %event. [ $+ [ $chan ] ]
msg $chan A new event has been set type !event to see it
}
}
on *:text:!event:#: {
if ($nick !isreg $chan) {
.notice $Nick Event is %event. [ $+ [ $chan ] ]
}
}