Surround Default + Mixing Q

I’m setting up for a 7.1 mix. I have multiple 7.1 busses and of course a 7.1 output. I would assume there is a default/balanced setting for the master 7.1 output and that would be something I would leave alone, and do all the panning form the individual tracks. I can’t find that “Default” setting.

ALSO- I don’t seem to be able to play one track and have the sound come out all speakers. I would think that this would work but can’t find a panning spot where that actually works. It very well may be related to the surround panner question above.

SO - 1. How do I leave my group and output panner set?
and. 2 - How do I play a track simultaneously out of all 7 channels?