bbPress.org

Hi!, I am using Learndash + bbPress, and I have LearnDash bbPress addon also. I have two courses where each of them have its forums configured.
Example:

CourseA
ForumA
ForumB

CourseB
ForumC
ForumD

If there is a student in courseB and he wants its forums, he can see all of them
ForumA
Associated Courses and Groups
CourseA
GroupA

ForumB
Associated Courses and Groups
CourseA
GroupA

ForumC
Associated Courses and Groups
CourseB
GroupB

ForumD
Associated Courses and Groups
CourseB
GroupB

So, if the student of CourseB, can NOT access ForumA and ForumB when clicks on them, but he can access to the ForumC and ForumD.

My question is: How can I make that when he sutdent of CourseB, if he wants to see his forums, only ForumC and ForumD appear and ForumA and ForumB remain hidden for this case?

All the forums is showed by default