Morning,Not sure what the small button on the lower left front corner of the quadrant is all about .... "Engine 1&2 3&4 ? quick guess , would this come into play if you add a second quadrant for "4" engines ?The owners manual went out with the garbage after the unboxing ?$#%@Came across an update earlier today about a Dash 7 on short final for MSFS 2020 .... credit card in hand !!