[Plugin: Verve Meta Boxes] Assign Boxes to Sub Categories?

Somewhat new to verve meta boxes but LOVE them! The only issue I’m running into now is that I would like to assign certain boxes to sub categories and it’s currently only allowing me to show main categories.

For instance, (the site content isn’t common to the lay person so I’ll use a common example), If you have a food review site and you had the categories “mexican,” “italian,” and “american.” Then under american, you have a subcategory of “bbq,” and “hamburgers.” Is there a way of assigning a box just to hamburgers?

Currently, the only categories verve is allowing me to assign to are the mexican, italian, and americans:)

Thanks!

http://wordpress.org/extend/plugins/verve-meta-boxes/