How do you set membership protection for posts?

Hi, I have decided to change from using coursepress pro to using membership 2 pro for my courses. I am going to create each module of the course as a post with several elements to it, but I would like the content to be drip fed dependent on which membership someone has, as some people will be doing a face to face course, and some will be doing online only content. However, when setting the protection rules for membership pro 2, there is no option to set the rules for posts like there is in the demo and the documentation. I am just wondering if there is a reason why this is as custom post types and pages are all showing up but not posts.

I have enabled support access to the site for 72 hours to investigate. There is currently only one post on the site named ‘Module 01’ and the only page that is protected is the classroom page. I would like the posts to be accessed via the classroom page if possible.