Hi
You can do the whole thing on the bench if the car has an automatic gearbox. If it is a manual gearbox, you have to do part on the bench, part on the car for the unlock process.
You can program the FEM body and gateway on the bench, if the car is an automatic, if not and it's a manual, just do the programming in the car, as you will need ignition ON in order to program.
I think body first, then gateway.
Thanks