Got it.. here's what to do to get the MemberGroup into the Userlist
first at all, we need to edit our language file(s) -> lang/<language>/userlist.php
add a new entry at the end of the list and don't forget to add a comma an the end of the line before
'All Users' => 'All', <--
'Group' => 'Membergroup'
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after that we need to edit userlist.php from the main board directory.
find around line 159
// Grab the users
$result = $db->query('SELECT u.id, u.username, u.title, u.num_posts, u.registered, u.last_visit, g.g_id, g.g_title, g.g_user_title FROM '.$db->prefix.'users AS u LEFT JOIN '.$db->prefix.'groups AS g ON g.g_id=u.group_id WHERE u.id>1'.(!empty($where_sql) ? ' AND '.implode(' AND ', $where_sql) : '').' ORDER BY '.$sort_by.' '.$sort_dir.' LIMIT '.$start_from.', 50') or error('Unable to fetch user list', __FILE__, __LINE__, $db->error());
replace it with this (the field g.g_title was added there)
// Grab the users
$result = $db->query('SELECT u.id, u.username, u.title, u.num_posts, u.registered, u.last_visit, g.g_id, g.g_title, g.g_title, g.g_user_title FROM '.$db->prefix.'users AS u LEFT JOIN '.$db->prefix.'groups AS g ON g.g_id=u.group_id WHERE u.id>1'.(!empty($where_sql) ? ' AND '.implode(' AND ', $where_sql) : '').' ORDER BY '.$sort_by.' '.$sort_dir.' LIMIT '.$start_from.', 50') or error('Unable to fetch user list', __FILE__, __LINE__, $db->error());
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now we need to change the display when viewing the userlist. we still edit userlist.php.
around line 148 you'll find:
<th class="tc2" scope="col"><?php echo $lang_common['Title'] ?></th>
add below a new line with this:
<th class="tcu1" scope="col"><?php echo $lang_ul['Group'] ?></th>
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then we go to line ~170 and find this:
<td class="tc2"><?php echo $user_title_field ?></td>
right after that we add this here:
<td class="tcu1"><?php echo $user_data['g_title'] ?></td>
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A word about the classes. you prolly don't have tcu1 in your css files. i've added that to my own css-set. so you have to check out this for yourself what class you wanna use there. you even can put the added lines for the new stuff wherever you want in that section (maybe you want the membergroup displayed before the usertitle, so don't add it below but above the title line. it's up to you.
anyway, i hope this was a bit helpful and all was correct here