My site has 2 types of visito, who have 2 types

My site has 2 types of visitor, who have 2 completely different types of subscription.

The first type is a rolling subscription and access to one part of the site, but the other is a one off fee for a month and access to a different part of the site.

I want these separated out when they sign up. When i put the join shortcode into a page, it puts both subscriptions in there. How can I only embed 1 of these?

Does that make sense?