Question about GUI and CLUSTER

[mizutani_jun]

Hi.
I'm currently using 4 computers for my project.
I connected all my computer in cluster mode but only want all clients to be my 3 screens.
How can i prevent my master computer in cluster mode from viz.go()?
I just want my master computer to control my GUI in master mode and the other 3 computers to be in cluster mode to be my 3 screens.
So when i click specific button in GUI from my master,all clients will go in viz.go() mode and show all the screens.
But when i send command like viz.go() in master of course the master also pop up screen right?
But i still got no success in this.
I also try this command.
viz.go(viz.CLIENT1)
viz.go(viz.CLIENT2)
viz.go(viz.CLIENT3)
But seems all clients just pop up screen in instant and then disapeared.
How can i solve this problems.
Really need help.
Thanks.