You need to set it up on an available ADCR channel. Like on EGT channel. In the "Gear" Tab you need to set TC Gear from selector to "ON". This will make Gear selection based on a voltage input rather than it being calculated. You will need to go to Display > Show Options Full List. Find a channel "Gear Analog Input". This is where you will tell the ECU which channel the Trim SW is on. Then in the Gear tab you will define the gear position voltage threshold with the Trim SW voltages. Once you have it configured you will go to Advanced boost and set up the boost target gear table. Turn the switch back and forth and watch the boost gear selector table move.

Make sure your Boost target comp table is tuned correctly. Please be aware there is a glitch currently with the RPM and gear boost comp tables. The RPM comp table does not use all of the RPM breakpoints. When you exceed the RPM comp table it will default to pulling boost from the gear table. Now that your Gear table is populated it will start to double the boost values.

EB Turbo