If volleyball players feel they are starting the attacking pass too early,
or the coach feels the attackers are coming too early, this is a good drill.
The playmaker is put down with a ball carrier.
He gets the assignment to play 5 or less times for himself.
The attackers do not know how many times this will happen, so they can only leave when the set-up is given, not before.
The attackers will have to come in more aggressively and will build up more speed and thus more height, provided they have a good brake pass.
If this goes well, the trainer can decide to move the playmaker closer to the attackers, so that the distance the set-upper has to travel is shortened.