Membership Plugin: subscriptions


I'm using Membership to control access to various online courses.

I would like users to be able to sign up for more than one course, but not in a linear, heirarchical fashion.

When I visit the page which shows all the available subscriptions, it seems as though a user can only be on one subscription at a time.

All other subscriptions are flagged with the message "upgrades not available".

I need these other subscriptions/courses to be available.

How to go about this?

Thanks :slight_smile: