[Admin]

In index.php add something like this in the loop when fetching all the online users:

if ($user['usergroupid']==5 or $user['usergroupid']==7) {
  $modsonline++;
} elseif ($user['usergroupid']==6) {
  $adminsonline++;
} else {
  $membersonline++;
}

I can't give you the exact code right now because I don't have access to any files.