1x Xbox One Controller per player (because the CronusMAX borrows the signature/ID# from the controller for itself, and the XBox One doesn't allow two devices with identical IDs operate at the same time.)
Plug the Xbox One controller into the CronusMAX using the Micro-USB-USB cable. (The authentication process is needed every time the CM device is connected on the system and/or every time the system is initialized).
Plug the CronusMAX into a USB port on the Xbox One Console (there is one USB port on the left side of the Xbox One, and one on the back). Wait for the CronusMAX adapter to show 0.
Unplug the Xbox One controller from the CronusMAX, and plug the Xbox 360 adapter into the CronusMAX. When the display shows 0 again it is ready to play.