Put this in LocalSettings.php.
// The Grim Reaper allows trusted users to demote and add groups to themselves, if necessary!
$wgRemoveGroups['reaper'] = true; // That's what Reapers do, they end lives...
$wgGroupsAddToSelf['reaper'] = true; // He is all powerful, after all.
$wgGroupPermissions['reaper']['block'] = true; // Yes, he must suspend the living soul
$wgGroupPermissions['reaper']['delete'] = true; // Remove thy trace
$wgGroupPermissions['reaper']['bigdelete'] = true; // ANY SIZE at ANY COSTS
$wgGroupPermissions['reaper']['protect'] = true; // Refrain the resurrections
$wgGroupPermissions['reaper']['undelete'] = true; // (No comment)
$wgGroupPermissions['reaper']['rollback'] = true; // You can figure this one out.
- Return to the user group list.