I don't have the software in front of me, but if you're in advanced tuning mode, you can go to hardware setup > digital inputs and then there are a few tables you can mess around with. On the first table you can assign what you want the input to do, for instance I had one setup for manual mode so my current gear always displays on the EVIC (well up to 6th anyway), but this is where you can assign the upshift or downshift and a number of other digital inputs. Then there is a table for possibly inverting that logic, which I did for the manual mode, so I didn't have to actually trigger it, it was always on, and if it did ever receive a signal, it would toggle it off. You can assign switch type (toggle or momentary), and then the last one is I think voltage reference, assuming 5V for low and 12V for high.
It is a busy week with kid's baseball but I will post back up when I have it installed. I really need the manual shifting as when I am driving aggressively or making a pass, the transmission locks me out of 8th gear, regardless of throttle position, and it will stay in 7th until I slow below ~75 MPH and then it will shift to 8th. Tuner couldn't figure it out but I am hoping manually shifting will get it done.