When you click on signup you don't see the registration form?

When you click on signup you don't see the registration form?
What am I missing? I don't see where you can assign the registration form.
I am using the free subscription gateway so I assume it would still allow for user registration. I will eventually switch to another gateway but for now I am trying to understand the basic setup. Any help would be awesome. PS I did read through the entire manual but I must be missing something.
Thank you for your time.