Hi, I would like to know if this is possible. I would of tried just using a required field but the issue I run into is that if a field is required in a form then it must be used even thou it is hidden and the user doesn't need that field. So, if there is way without using JavaScript that would be good. But if I need a JavaScript has anybody come across this situation. And since I don't know how to code js does someone have an code example that maybe I can TRY to figure out? Here is a diagram. Remember, you can only see these field option when a combination of these two Main and Sub category selections are picked.

Thanks in Advance