Hello
In Target Script Editor :
KeyAxis(&Throttle, THR_FC, 'iu', AXMAP2( LIST( 0, 20, 80 ), USB[85], 0, USB[84] ));
KeyAxis(&Throttle, THR_FC, 'ou', AXMAP2( LIST( 0, 20, 80 ), USB[85], 0, USB[84] ));
KeyAxis(&Throttle, THR_FC, 'im', AXMAP2( LIST( 0, 20, 80 ), USB[85], 0, USB[84] ));
Zoom in and Out for some layer on the Throttle slider.
LIST( 0, 20, 80 ) : divide the cursor in 3 zones
USB[85], 0, USB[84] ) : assign key for the 3 zones
Hope this help you.