How to link two menu bars?


I would like to create menu bars as attached picture below. I found ways to create two menus according to the links ( ) and ( ) but the problem is that I cannot find ways to link it as in the picture (PORTFOLIO > Product). In this case I would assume that which ever we click on vertical menu, PORTFOLIO would still be highlighted. How can we link which ever we click on the vertical menu to be under horizontal menu section?

Thank you.