How to remove the rear panel freezer

Question

We have a whirlpool fridge freezer WRX38RWH6 which has started to leak water into the fridge & i have seen on this site that you need to remove the rear panel & defrost it & make sure that the drain hole is clear. I have emptied the freezer & turned it off but i am not sure how to remove the rear panel with out damaging it could you please tell me the best way to do this.
Kind Regards Marty.