For group sizes you could look into the law of fives for groups but im not sure how it would work in this type of set up. Essentially a video chat should have a

For group sizes you could look into the law of fives for groups but im not sure how it would work in this type of set up. Essentially a video chat should have a max occupancy of five. Any more and because it's hard to model the relationships of permutations between people above five it's possible for both positive and negative things to go unnoticed. It's impossible to be a troll in a group that has less than 5 members. It's also easier to get help and make friends in smaller groups than larger.