like, if a nick joins chan and there's no op notice nick - please part channel so the bots can cycle..

on 1:join:#:{
if channel has no op .notice $nick Please part channel $chan so the bot's can cycle!
}

$nick(#,0,o) will be 0 if the channel has no ops,
so
if (!$nick(#,0,o)) { commands }
or
if ($nick(#,1,o) == $null) { commands }

your choice