This dialog box allows you to select the correct input channel, for a given helicopter control function.
The screen capture below illustrates choosing the Roll-Cyclic channel.
To choose a channel, move the stick on your control box that you want to control the function. For roll cyclic, this would typically be the left/right motion of the right stick (assuming Mode-2). Watch the indicators on this dialog box, as you move the stick. One of them will move in coordination with the desired stick motion.
The indicator may move backward from what you expect, but this is not important! The direction of motion will be corrected on the controller mapping dialog box. The only task here is to select which channel moves with the desired stick.
When you have found the indicator that moves in coordination with the desired stick, press the button next to it.
That's it.
