On my website,
www.nonapowers.com under framing papers, click on art design, I have an illustration of a vertical design system provided by Tim Dykstra. You can download it and make it yourself. Mine used to be at the end of my design table in one location, in another it covered the storage area for customer art and I would swing it out on a piano hinge when I wanted to use it.
I travel a lot to other shops because I'm an industry educator and in one shop in New Mexico, they had one type they built on rollers. It had drawers on the bottom and storage between the two board arranged on a slant. It could be used on both sides, easily
Putting the art on a vertical surface and then stepping back, gives you and the customer a fresh view and the art will look more like it will hanging on a wall. The correct design shows much better.
It's also a sales tool because you can pick out the mat and frame choices, find two that work well then ask for the sale by moving it from the design table to the decision board.
Whatever you come up with, you will wonder how you ever lived without it.