I can't seem to find an option in Music Maker 2016 where it let's me decide which input on my interface I want to use specifically.

I select ASIO driver, then my interface (which is a Steinberg UR12, with 1 XLR and 1 Mono input), but then it automatically sets it to record out of both inputs. This causes my recording to only pick up on the right side and nothing on the left.

Is there a way to fix this? Or am I just stuck with having to buy a new interface? Please help!