Adding comments/ratings to courses in CoursePress Pro

I'm trying to achieve the same as functionality as mentioned below:

https://premium.wpmudev.org/forums/topic/ratings-and-review-plugin-for-courses-in-coursepress

...This is, I'm looking to allow users who have enrolled on a course to write a reviews on the course page for other visitors to see. I have tried to follow the steps in the Forum post above but cannot seem to get this to work.

Can anyone help please?

Many thanks