Volleyball drill: service pass exercise

Servicepass training for 4 to 12 persons4
persons:
2 servers at the servicepoint.
1 passer1
receiver
(dynamic) same as static but dancer plays ball on receiver. Passer plays to off-setter. (server becomes reserve, reserve becomes passer, passer becomes receiver etc.)

6 persons.
2 servers3
passers1
receiver
(static) see four persons
(dynamic) server serves the ball and runs after his/her ball.
Passer passes the ball to the receiver. The player on the right becomes the server and the server
moves in on the left. Catcher becomes server. If this does not work out 1 passer becomes reserve.

Extend with fixed sv and extra player on pos 4, who will attack. Passer becomes attacker, when pass is wrong the passer goes away.

Extend with blocking.