How should I make the setup for a game with different screen

I’m thinking of making a game with pseudo-multi-event-screen functionality by changing the view perspective of the player from point a to other positions.
How can I apply it to the game so that it won’t affect the game itself whenever the game is being played?
I just want to add more functions that wouldn’t give problems to the game itself.

Can’t anyone help me with this? Then what’s the purpose of this forum then? Isn’t it to help the game-devs?

Just move the camera position.

How can I measure the x & y coordinates for the camera?

Follow this one, Hoping the help that i gave it to you is correct.