A comment by jr roberts Feb 16, 2016 in reply to question Feb15 2016::
"X-Plane allows only one function per flight hardware axis. I don't think there is a way to make one lever work for more than one thing in default X-Plane.".
The truth is, in x-plane 10, the CH single levers (Throttle, Pitch and Mixture) act on BOTH the engines in the Laminar Baron and the X-Aviation Beechcraft Duchess. How do I make the single lever quadrant work on both engines in x-plane 11?