Froum permission does not apply to topics

We are developing a website using Ultimate Member and ForumWP to limit user accessing, posting and replying. Each user group has its forum. Users belong to the user group can access the related forum and posting and replying. Now, we can limit the user access to the forum page, however, the posts in the forum are globally accessible which content restriction setting does not apply. How we can automatically apply the same restriction to post as forum?