This is a great point. Last year I had contacted IDEA fit to suggest they create a separate sign in form for non IDEA members“ sometimes if you answer a question and you look back to the person asking to see how to couch the answer (and you do not want to insult a professional by simplifying, nor do you want to confuse a client by being over complicated) I noticed that their home page is the same as that for the professional. I think it would be helpful to have two ways to enter the forum“. for a lot of reasons. As you say, you could have an area for the kind of questions the public asks, and another for professionals. Also, when a non professional makes a form it might be confusing to them to have too many fields to enter. If they were simply asked for a name and a geographic location , or just a few fields it might be helpful.
If you get some information about the availability to set search parameters please let me know.