Change WordPress user roles and capabilities › Forums › Restrict or Permit access inside WordPress – how to › Restrict user to post category? › Reply To: Restrict user to post category?
There is no user interface for this in the User Role Editor. You may restrict access for posting to the list of categories this way
P.S. My apologies for the delay with answer. I did not get automatic notification email about this post for some reason. You may email directly to email@example.com in case your question was not answered in 24 hours.