How to configure the FOV for a sniper rifle scope?

[Sever3]

I display id 8 UI, when reload it turns off, all this is clear. But the scope (zoom) works at 40 FOV of main camera, as I understand it by default. How can I make it so that when aiming the camera's FOV drops to 5, like in the demo scene? I also use cinemachine, do I need any additional settings for it?

 

[Justin]

The demo scene uses the state system to change the field of view on the view type. It changes when the zoom state is active.