Board Thread:Support Requests - Getting Technical/@comment-2170536-20130901071607/@comment-2170536-20140727063113

All you need to do is create a page called MediaWiki:Wikia.js (or edit the already existing one) and paste in the following lines:

importArticles({   type: 'script',    articles: [        'u:dev:ExtendedNavigation/code.js'    ] });

Then publish and hard-refresh your browser a few times (sometimes it can take up to several minutes to clear the cache). Then you can edit your Wiki-navigation file like you would normally do, except you can add 4th and 5th level menus.