Camera help

Hi,
So I have three cameras in the scene, one attached to the player controller, the main camera and one that hangs above a quest post. As I was building it and trying it out it worked that the player controller camera activated first and then I clicked e on the quest board which switched to the quest camera. I launched Unity today, without changing anything, and it immediately launches the game in the quest camera. I had to uncheck it the switch back to the player cam.
Can someone help explain why that happened and how to fix it please.

 

If all the cameras are targeting the same display or buffers then you should have only 1 of them active at a time. You should be managing in your game code which one of those cameras is the active camera.

 

Thanks, I realised soon after this that the quest board cam was always selected and that's why it just jumped to it instead of the first person cam.