If you want to add extra html pages to your forum, like Terms of Use, Private Policy, etc, you can easily do that by going to:

VANILLA BACKOFFICE > PAGES > All Pages
When creating a new page don't forget to:

edit the Page URL - ex: http://one-click-forum.com/forum/page/terms-of use

check the Show advanced options?

check the Hide "/page" from the URL?

IMPORTANT: you need to have the Basic Pages application installed (this is installed by default on the One Click Installation)