Possible to add header/title to mega menu columns?

Hi:

At the url you will see the first navigation item is “Services”. In the mega menu below Services I need to have 2 columns as is current, but the first column is a list of “Primary Services” (Buying Power, Promotional Products, etc.) and the second column is a list of “Ancillary Services” (eCommerce, Administrative Support, Fulfillment & Distribution). Is there a way to add a header/title to those columns to make clear the left column’s 6 items are considered “Primary Services” and the 3 items in the right column are “Ancillary Services”? Or is this not possible?

Thank you so much!

The page I need help with: [log in to see the link]