acasuso

Hi, i buyed a dahua DVD model 1604, 16 ch video and 4 audio. By default.. the dvr asigns de audio channels to the video (V1 A1) (V2 A2) (V3 A3) (V4 A4) well I need to change that... for example i need to link audio channel 1 to video channel 7. It's possible ? If it's not.... how can re-order the channels in the viewport? Well, i need some help... thank's for your time... and sorry for my bad english..