Board Thread:Support Requests - Designing Your Wiki/@comment-1450483-20130331210442/@comment-4674838-20130331224221

Hi, you shouldn't need to "upgrade" anything to get a level 2 menu. You can edit the wiki navigation at MediaWiki:Wiki-navigation on your wiki. The basic syntax is like this: The number of asterisks (*) indicates what level the link is. See the Wiki Navigation help page for more information.
 * page name|display text
 * page name|display text
 * page name|display text

You may also want to take a look at MediaWiki:Wiki-navigation here on Community Central and compare it to the navigation menu to get a feel for how it works.