Board Thread:Support Requests - Getting Started/@comment-26842327-20150606184931/@comment-1038387-20150606190102

You can add the category at the bottom of the page. Click "Add Category", type in the name, press enter and OK. That should do the trick.

Can you give us some links to the category and the page you're trying to add? That way, if you are doing something wrong, we can find out what, and how to fix that.