Hello Pat,
Thank you 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.
Any membership plugin (like MemberPress, or 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.