Are you using the key input for testing? You could just code the BP to always point the camera at the player using ‘LookAtRotation’.
However, if you want them all to respond to keypress, you’ll need to make sure the key isn’t captured:
Then, you can put in the BP to only respond to the key if the player is in it:
In fact, thinking about it, the first thing is enough, because we don’t care if all the cameras rotate… 