This request is based on a scenario that I run across frequently.
I start up a new band and get the first person connected to my network. The second and third people are watching and connect themselves. Now all three are looking at their app saying, "I'm not (name of Aux 1 band member here)." Well, I have not assigned them yet.
Or even worse is that they don't remind me (in the heat of getting things finalized) and start messing with the mix they aren't actually listening to messing up their mate's mix.