Hi,

You will need to have a tree structure like this where the documents will inherit the page template:

FAQ
--subFAQ1 (inherited page tempalte)
----faq1
----faq2
----faq3
--subFAQ2 (inherited page tempalte)
--subFAQ3 (inherited page tempalte)

Then, on the root of this structure you need to place a menu web part, which will list the subFAQ documents and also a repeater web part, which will list the FAQ documents. You need to set the document types and path properties(http://devnet.kentico.com/docs/devguide/appendix_b___path_expressions.htm).

Best Regards,
Juraj Ondrus