Ok, I'm reaching wayyy back... I have an old mixer (Soundcraft MPM 12/2) and want to know which port to use to ouput to my Scarlet 2i2 audio interface to record to my iPad. Monitor? Group? 1 trs 1/4" cable out of the left channel of the board and into the left port of the 2i2? 2 trs cables left and right and into both ports on the 2i2? Or maybe a y-cable dual mono (ts) out of the board into trs on the interface. If I do the last option, should I turn push group stereo to Mono (and therefore go out of the group 1/4" ports?