For starters, close mic the panelists. I assume there will be sound reinforcement. Take a split or just take direct outs from the board. If no reinforcement, set up your own mics.
As for the performances, that really depends on the source. For a choir an ORTF setup would be fine. For a rock band, probably not.
"If you have to flip back and forward, A/Bing to work out the differences, it's not "night and day" - any more than you have to blink many times to work out the difference between dark and light." Psycho_Monkey