PUG, or Premade user groups, are self-explanatory, "copy-paste this code here for your arbitrary usergroups" configurations that add arbitrary user groups to your wiki.
Please copy and paste the code found here (as you need them) and place it in
$IP/LocalSettings.php. Note: $IP stands for the root directory of your MediaWiki installation, the same directory that holds LocalSettings.php.
List of some user rights. Full list at Snippets/PUG/Groups.
This is a placeholder for categories.