/**
 * This will add the patrol group
**/
$wgGroupPermissions['patrol']['patrol']          = true;
$wgGroupPermissions['patrol']['rollback']        = true;
$wgGroupPermissions['patrol']['autopatrol']      = true;
/**
 * This will add the autopatrol group
**/
$wgGroupPermissions['autopatrol']['autopatrol']  = true;
/**
 * This will give sysops access to the Special:Userrights page
**/
$wgGroupPermissions['sysop']['userrights']       = true;
/**
 * This will restrict sysops to add/remove only the specified groups in the Special:Userrights page
**/
$wgAddGroups['sysop'] = array( 'patrol', 'autopatrol' );
$wgRemoveGroups['sysop'] = array( 'autopatrol' );
/**
 * This will give bureaucrats access to the Special:Userrights page
**/
$wgGroupPermissions['bureaucrat']['userrights']  = true;
/**
 * This will restrict bureaucrats to add/remove only the specified groups in the Special:Userrights page
**/
$wgAddGroups['bureaucrat'] = array( 'bureaucrat', 'sysop', 'bot', 'patrol', 'autopatrol' );
$wgRemoveGroups['bureaucrat'] = array( 'bot', 'patrol', 'autopatrol' );