Re: Forum permissions
What you are trying to do with read-only has to be done in post-form.php
You’d have to wrap it in a check for which forum id # it is and not allow the form to render if it’s one of the forums you don’t want posts in. Of course this blocks admin too which is bad so you’d have to check bb_current_user_can(“administrate”) too.
Then there is the dropdown section, where you’d have to prevent the forum name from listing, so that needs a replacement function. It’s not 10 minutes of code unfortunately or I’d do it for you.
Basically you’d need a completely custom post-form.php in your template.