Make sure you have a Cronus MAX - it's required.
You also need a wired controller (Xbox 360) - a proper licensed wired controller, not a Play 'n' Charge kit. (Xbone just requires a USB cable).
Start up the Xbox360/Xbone. Plus in Cronus MAX. Cronus will display "U" and "d" or something to indicate it needs authentication. Plug in the controller. (For Xbone, this controller is unusable while the Cronus is plugged in). Once it changes to a number, you're done. Unplug the controller, and plug in the receiver for the D6. Make sure it's set to console mode and not PC.
That is all you need to configure.
Start a game. Turn on the D6, and point it at the screen. When the D6 starts, it will point to the ground in-game. Press the calibration button, then aim D6 at the floor, and then release. Press-level, let-go, at floor. (I've done it where I've pointed at screens lower than me - it's possible).
At least, that's how it works for me.