MediaWiki:LocalSettings.php

$wgExtraNamespaces = array(100 => "Guide", 101 => "Guide_Talk");

$wgNamespacesWithSubpages = array(       NS_TALK           => true,        NS_USER           => true,        NS_USER_TALK      => true,        NS_PROJECT_TALK   => true,        NS_IMAGE_TALK     => true,        NS_MEDIAWIKI_TALK => true,        NS_TEMPLATE_TALK  => true,        NS_HELP_TALK      => true,        NS_CATEGORY_TALK  => true,        100               => true,        101               => true );

$wgNamespacesToBeSearchedDefault = array(       -1                => false,        NS_MAIN           => true,        NS_USER           => false,       NS_USER_TALK      => false,        NS_PROJECT_TALK   => false,        NS_IMAGE_TALK     => false,        NS_IMAGE_TALK     => false,        NS_TEMPLATE_TALK  => false,        NS_HELP_TALK      => false,        NS_CATEGORY_TALK  => false,        100               => true,        101               => true );