I'm struggling a little to find the necessary documentation to get started using the Authenticated Website profile & user licenses type.  How do I create new users?  Is the only way to do that is to create the user using Apex?  We don't need (or want) self-registeration in our use case -- we really want the bare minimum "user get username and password & is able to login..."

Ideally this is probably just a simple recipe and I'd be ready to go -- but I'm struggling figuring that out, even though I think it should be easy over all.

Michael