Creating custom pages like "About" and "FAQ"

I’d like to create some pages that I can link to in the sidebar and have it appear in the tabbed layout next to “About” and “FAQ.” I’ve tried page publishing, but I don’t want a static page separate from the rest of the forum. I also dislike having pub in the URL. I just want a /rules and /apply page that are integrated into the forum and easily accessible. Are there any simple ways to achieve this?

If I were you I’d use the landing pages plugin for this use case: