[CharlieDelta]

If you are like me and have custom usergroups and your new members are not displaying in the "just joined us" section you will need to edit the usergroupid in the memberslist.php

Find

// Just Joined us
  if ($vbulletin->options["forummembers_newest"] == '1') {
        $newusers_get = $db->query_read("
                          SELECT userid, username, usertitle
                          FROM ".TABLE_PREFIX."user
                          WHERE usergroupid=xx OR FIND_IN_SET(xx, membergroupids)
                          ORDER BY joindate DESC
                          LIMIT $limit");

and edit the usergroupid (xx) in red to represent your custom usergroup.