Thread:AnimationFan15/@comment-26212090-20161025073835/@comment-24364245-20161025075909

That's really weird. Just go to "Add Category", type in the category name (if it doesn't appear automatically, the wiki still programming for that category to appear. If this happens, you have to type the category's full name), then you press your enter key, and when it's set, you press save. You added the category.