Our Stand UP/ Sit Down desk uses a Zen Office™ (Barefoot Office Kit #1) placed on top of an Eco Tower™ (Barefoot Office Kit #3). This configuration places the laptop screen, external keyboard and mouse each at their optimial levels).
For sitting, simply reconfigure the pieces. Place the Tilt Seat™ on the floor and reverse the angle of tilt as shown. Then you will be sitting on the Tilt Seat™ and using the Peace Bench™ as a podium to raise the height of the laptop screen. Then put the keyboard and mouse on the surface of the EcoTower™