How to create new forum

This is probably the easiest way. Yet if you don't see the three edit boxes, it simply means you don't have enough reputation points to create one.

https://similarworlds.com/new-group

Potato probably doesn't know about this method. He has me blocked. The link he gave is valid, though old.

Yes! https://similarworlds.com/help/54-How-do-I-create-a-new-Group