parent forum

1. Add a forum node without associating it as a child to any categories. 2. Create a child forum node attached to the forum node you just created. Child forum will additionally appear like a parent forum underneath its parent forum instead of under the drop-down list.

I want to have all threads created in the child forums be shown in the parent forum below the below the child forum nodes. Basically an aggregate of all child forums showing in their parent forum. If it is possible (but not required), I don't want people posting in the actual parent forum...