Just wanted to share the way I have this set up and if you get stuck, a reminder to use the search option when pinning posts.
Did you know you can pin posts to a course? You might ask yourself what the point of that is. While there are several reasons you may want, or not want, to do this, this is why and what I have done.
In my community, I have a pinned post to the first lesson in each course. I have that post be related to only that particular course. The idea is that any feedback (reviews), questions, concerns, or otherwise are brought to that particular post. Not only will that post maintain engagement, it should help keep the community feed cleaner without duplicate posts that may be asking the same thing.
Again, I have this done with the preface being, use this about the course itself. Other questions that are not about the course are still welcomed to be posts.
Also, when pinning, if you do not see the course you want in the drop down, simply search. You can type in the box and find the course by typing the course name. The dropdown does not scroll.