AEG integrated fridge freezer doors need installing, turn off fridge freezer or not??

Hello,

I've recently fitted a kitchen for a customer which has came out well but I haven't had much experience in fitting the integrated doors to a fridge freezer.

I've been waiting on a delivery of the doors as the original ones were damaged and got sent back, they arrive on Wednesday for me to fit on thursday but the rest of the kitchen has been completed for around a week so the fridge freezer is all up and running.

By the looks of it it's a sliding mecanisim for fitting the AEG fridge...

AEG integrated fridge freezer doors need installing, turn off fridge freezer or not??