Mute/disable certain inputs from ever going to Main LR mix

Hi, I’m looking at this for a church streaming context. We have two room mics that I would like to send to a livestream mix (via outputs 1/2) that DO NOT need to be sent to Main LR for obvious reasons (feedback).

Is there a way to make it ‘harder’ for sound volunteers to do this? Can I disable, mute, or lock two physical inputs from ever being routed to the Main LR? Can the sends be active if the main fader for the channels are muted?

Thanks!

Because no one answers:
I think, there are no special functions for volunteers, but according to the block diagram also on this mixer you can switch the sources of an aux mix (your live stream) to pre fader.
Then you can close the faders of the room mics in your Main LR and independently open the faders of the live stream mix.