
1. Create database table namespace_names with the following SQL query: (Make sure to add your wiki's table prefix if there is one, e.g. mw_)
CREATE TABLE `mw_namespace_names` (
  `ns_id` INT(8) NOT NULL DEFAULT '0',
  `ns_name` VARCHAR(200) NOT NULL DEFAULT '',
  `ns_default` tinyint(1) NOT NULL DEFAULT '0',
  `ns_canonical` tinyint(1) DEFAULT NULL
) ENGINE=MyISAM DEFAULT;

2. Assign the necessary permissions in LocalSettings.php to allow specific user groups to edit namespaces:
$wgGroupPermissions['sysop']['namespaces'] = true;

3. Installation can be verified through the Special:Version page of your wiki
