How do you do a substitution in volleyball?

Question

How do you do a substitution in volleyball?

Answer 1

Your coach signals the referee, and you stand on the outside line, and the scorekeeper people right down your number. And then you switch.

Answer 2

the ref blows the whistle, you stand between the net and the ten foot line, the 2 players stand face to face over the line, grab hands and one goes on while the other goes off. they have to be touching for some reason.