how to easily add users to subscriptions when already using User Registration page

i am in the process on adding a 2nd user type to my site. I use gravity forms (with user registration feature) to create my accounts. normally I had the users added via the user registration option and assigned them into a default subscription. Now I have 2 user types and it seems that i can only add them to the default subscription. What is the easiest way to add the other user types to their subscription? I dont want users subscribing. is there a way to incorporate this into the registration form or page when i create the user accounts through the form?