The whole panel comes out quite simply!I sound deadened the outer panels last week. These pictures may help. I left two top bolts in but loosened them. Slowly prised the inner skin off, need to carefull of the window mechanism on the bottom inside of the door which catches on the lip at the bottom. Loosening the top bolts allowed me to nudge the entire inner skin up a few mm and then the mechanism doesn’t catch. Finally used some trim tools to hold them apart for slightly easier access. Wear a long sleeve shirt the edges are sharp when putting the dodo mat inside!
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Remove the round rubber grommets- wind the window down to expose the glass clamps and loosen- lift the window and wedge it - remove the lock (see online video) and with a bit of wiggle it’s off an no first aid /blood transfusion necessary.