$wgCategoryPermissions['Catégories_cachées']['*'][] = 'sysop'; // Sysops can do anything they want with this category.
$wgCategoryPermissions['Catégories_cachées']['read'] = array('sysop', 'family'); // Sysops can do anything they want with this category.
$wgCategoryPermissions['Private']['*'][] = 'sysop'; // Sysops can do anything they want with this category.
$wgCategoryPermissions['Private']['read'] = array('sysop', 'family'); // Sysops can do anything they want with this category.