Can you set up a camera to preview in at all times, even when moving objects around in 3D space?

Ok. I'm working on a game as an animator, I want to be able to set a window up as the camera preview and have it constantly look through it so I can key objects along a timeline.

The reason for this is so I can view the objects as they pass the camera that will render/show the animation so they look correct. but every time, i am able to see the camera in play mode and see what it sees but when i select an object to move and the camera resets itself. if i don't want it to be in play mode i know that there is a camera preview box, is their anyway of being able to see that camera preview box constantly in a new window or tab, without it disappearing and able to follow the timeline its been animated on.