How to control the client's Camera through the server?

What i want to achive is a CAVE or PowerWall(using c++) . I use the “FirstPerson shooting” as an example of my test.
For example, I have three computers, one server and two clients,
how can i control the two clients so that one client can display server’s left scene and the other display the right of the server (just like a cave’s front left and right)?

Any suggestion will be appreciate .
Best regards

can anybody give me some advice ?