Question

It would be useful to be able to duplicate the Main on a pair of linked Aux mix, with just a simple click. Not have to go through all the channels for the Aux mix and set them but they mirror the main mix, with the exception of the master.  This would help to provide a simple recording output, FOH outputs for split theatre amp setups etc.

Answer 1

With the main mix in focus, in the flex fader area there is a copy button, then you select the mixes you want to copy to. Is this not working for you? Or it doesn't do all what you need?