Can you give more details about this? Why are you moving it from the server to the client? Do your doors have a hitbox or region where a player must enter before the doors open? If so, you can just listen for the event using Zone+.
If you need simple tween animations for doors on the client, you can just make it so the server detects if a player has entered a region using Zone+, and then have the server fire a RemoteEvent to the client to tween the doors.
The best solution is to just have it on the server.