Categories and pages

Okay, so I have the directory plugin installed and I have added listings. I currently am using the Network theme too. The problem is that the pages I have set up have zero bearing on the listings created. How do I sync the pages I have to the categories of my listings?

Let’s pretend I am creating a directory of real estate agents (not my actual site’s purpose, i do not want to reveal that). So I categorize by commercial, residential, and industrial. Since the site is devoted to agents the page is named “agents”. I also create a page called “specialty”. This page has sub pages of commercial, residential, and industrial. How do set up the directory so that when someone goes to the specialty/commercial page they see the commercial category of agents?