Hello Nicholas,

Thanks for reaching out to us.

Amelia doesn't yet have a membership feature, but it will be developed as a part of the Developer license (maybe even as part of the Pro license) in the future. But there may be a workaround you're interested in. Any membership plugin (like MemberPress, Ultimate Member, etc.) allows you to create pages that are inaccessible to some (for example non-logged-in users). 

You can also create custom logic, so a user can access this page once a month (for example), but we're not sure about that, since we don't work with Membership plugins. 

Please take a look at our Packages feature, and see if maybe the Packages would be useful for you.

Packages in the Amelia Booking plugin are made to give you the option to create a package of multiple appointments from the same or different services and give a discount to the total price to attract your customers more. The customers are able to schedule appointments for the services bought with the packages.

I hope it helps.