Adjusting audio on 5D MK III using firmware v 1.2.3 while recording

[IndyP]

Having used a Canon T2i with ML for some years, I now have a 5D MK III, and notice that Audio control is a missing feature on the display. Now that I understand that none of the 5D MK III ML firmware versions support this feature, my question is.

       Is their a way to adjust audio on the 5D MK III while recording?