How do I get sub-forums to show on FORUMHOME?

[BigJohnny]

If I have a category, and a child forum for that category, and then another child forum for the child forum, I want that second child forum to show on FORUMHOME, but no matter how I set the depth options sub forums don't display that far down.

What I want to do is;

Category (Act as forum=no)
|- Child Forum (Act as forum=yes)
|- Child Sub-Forum (Act as forum=yes)

But what shows up on FORUMHOME is;

Category (Act as forum=no)
|- Child Forum (Act as forum=yes)