Re-Use Animation With Auto Trigger

[Frank1000]

Hi,
I want to use the same srt animation on many objects, just at different times, while the animations need to be relative to the objects initial srt and trigger when the object is in the view field of the camera and has a certain max. distance.
So lets say a ball rolls from A to B (B = initial position before animating) and now this same animation should apply to other balls relative to their many different positions in the scenery, while the camera flies around in the scene.
How is a good way to do this with the least amount of steps ?

Pls share,
Frank