on *:INVITE:#: { timer 1 1 /checkusers $chan } 
alias checkusers { 
  if ($nick($1,0) < 5) { notice $1 You need 4 5 users in $1 for $me | part $chan } 
  else {$nick($1,0) < 5 { notice $1 This channel meet's the minimum user req's } 
} 
on *:join:#:{  
  if ($nick == $me) { 
    timer 1 2 checkusers $chan 
  } 
}