Linking Channels

Anyone know if it is possible to link channels so when i move a fader on my lr, it moves on one of my mixes? For example when i change the volume on a channel on my main house speakers, it changes to match what i just did on my mix 4 which is being recorded on my dslr.

If you set the mix inputs to “post fader”, and then set all faders in the mix to 0db, adjustment to the LR faders will be reflected in the mix levels. The faders in the mix won’t move with the LR faders, but the levels will change.