Selective permissions cannot be created, especially on subscription based forums. I have a forum where it's subscription based so every month each member gets demoted to Validating until they buy new subscription. Of these members, 1 of them is not allowed to post in Forum X but is allowed to view the posts in Forum X.
This cannot be done however, without over-riding the user's permissions. This is not a proper solution for the member then gains indefinite access to the forum after subscription expires.
I am requesting the ability to deny specific users of certain permissions, e.g., only being able to view posts in Forum X, so that it does not affect the Primary Group by overriding it.