Updated for 7.0
Click on the Settings icon (the gear) located to the right of the search bar. This will take you to this page:
Within the horizontal navigation bar select Parade. Then, select Chassis. This will take you to this page:
To edit, Click on the desired box.
To make a side active/inactive, click the toggle located to the right of the corresponding box.
When done, click the Update button in the bottom right-hand corner.