Board Thread:Support Requests - Getting Technical/@comment-29037175-20160726032541/@comment-30195593-20160726052223

At the bottom of the page, the should be a "Categories" bar. Click edit, then add a category. Then hit "save".

Or you could go into the source editor for the page and add "" to the page.

As for the wiki navigation header, add the category page name instead of "category1" or "category2". To see how to make a drop-down list, see Help:Navigation