Form Categories Layout beginning on 2. Level

Hi Stackideas Team – Is there a possibility to create the same View like a "Categories Layout" but not from the 1. Level on a selected Category on 2. Level:

Our Structure
FORUM
- Category 1
--- Board/Category a
--- Board/Category b
--- Board/Category c
- Category 2
--- Board/Category d
--- Board/Category e
--- Board/Category f

...and there we need use the Categories Layout only for the Category 2 and his Boards.

Thanks

Chris