People can meet other people on their own or the get-together can be arranged by someone else. Matchmaking is an art based entirely on hunches, since it is impossible to predict with certainty whether two people will like each other or not.
"All you should ever try and do is make two people be in the same room at the same time," advised matchmaker Sarah Beeny in 2009, and the only rule is to make sure the people involved want to be set up.