How to make a script for Multipart sliding doors?

So I have this structure of a door and each door model has 7 parts which are named: Bottom, Glass, LeftPin, LeftSide, RightPin, RightSide and Top. The Motion Detectors have a sensor and a isDetected bool value. I would appreciate if someone could help me make a script so that the doors push back 0.5 studs and then open 4.2 studs. The doors stay open for 5 seconds and the total opening or closing time is 1 second. Thank, you.