The domain is  [CODE]https://swcthefinalchapter.com[/CODE]

If you moved the homepage and put it on the domain you should be able to have it there before you enter the site.

An appropriate sub-domain (it is like a child of the domain) for a forum would be [URL]https://swcthefinalchapter.com/forum[/URL]

You should be able to put the forum there if thats what you want.

Whoever actually bought the domain and manages the server hosting should know how to put a sub-domain and the domain stuff