Right now, there are 5 different keyboard commands allowing to select the engines:
Engine Start/Stop All Engines KEY_E,SHIFT
Engine 1 Select KEY_1,SHIFT
Engine 2 Select KEY_2,SHIFT
Engine 3 Select KEY_3,SHIFT
Engine 4 Select KEY_4,SHIFT
To use those commands with a HOTAS, you need to dedicate multiple buttons (up to 5, although this number can be reduced by using gizmos like scripts and modes for the CH products).
To reduce the # of buttons needed to 1 whilie keeping your config simple, I suggest to add a single new keyboard command allowing you to cycle through all your plane's engines (same principle as the fuel tank select keyboard command):
- twin: all engines -> engine 1 -> engine 2
- 4 engines: all engines -> engine 1 -> engine 2 -> engine 3 -> engine 4
- single engine: no effect
The selected engine indication could appear in the text buffer to avoid the need to add a new gauge in the cockpits.
Your inputs and ideas are welcome.