Multiple Levels of 'Category Leaves'

Hi Everyone,

I am new to Roku Development and trying to understand the hierarchy in which Categories / Subcategories and items are displayed. (tweaking Videoplayer example)
I am wondering if there is a way to display multiple levels of 'Category leaf' nodes.

I am trying to achieve something like this..

--Category - 'Archives'
-------Category Leaf - 'By Channel'
--------------Category leaf - 'Channel Name'

Can the 'Feed' value in a 'Category Leaf' return further Categories?

I would greatly appreciate if someone can throw some light guiding me in figuring out this.

Thank You,