When groups of players come in our room we ask them how many are playing on the table. If there are 6 of them and they say 6, we’ll put 6 of them on the clock on the table to start with. If we see they are taking turns playing doubles (4 at a time) we’ll delete 2 players off the clock. Even if they are playing singles, two at a time, we’ll only charge them for two players, even if they rotate who plays among the 6 players. It is very common for there to be 3 players coming in together and they rotate playing 8-ball, so we’ll only charge them for two. Those sitting and watching even if they are not on the clock, are likely to spend $ on food and drinks.The worst attitude I've seen in a room owner was where every person in the playing area was charged as a player. You want to sit and watch a match? You pay table time. Six people in a group with only two players? All six pay table time. You step inside the rail? You're on time.