Acoustic Play AUX output

New

I switched from VLX3 extreme to an acoustic play.  The AUX output used to be on the vocal side of the XLR output.  On this acoustic play I have it set for vocal and guitar and it seems the AUX output is on the guitar side. Anyway to switch that?  I want to keep it Vocal on one channel and guitar on the other. But would like AUX to be on the vocal side