Yep. What he said ^^. Easy-peasy.
Open the hatch. Remove the two nuts on the inner side of the light assembly. Then the unit "hinges" out on two curved pins on the front side of the assembly.
Once off, you will see that the red lens portion is itself a sealed unit within the black (or silver) outer shell. Two finger-clips on one side - and two tab/slot alignments on the opposite side release this.
Then another set of clips - centrally, one either side of the lens housing itself removes the lens from the light/reflector portion. Bulbs are bayonet type press-in and turn to release. After inserting new bulbs, wipe the glass with micro-fibre cloth and VERY GENTLY dust the refectors if necessary.
Seems the first to fail is the center bulb left turn. Intuitively this will be a clear bulb, but on mine it's amber. I'll probably replace it with a clear one next chance I get.
The top bulb is the 1157 type with 160* offset pins. The centre is the simple 1156 type. The bottom (reversing lamp), I don't know - never had it out. Others here can give you the actual EU descriptors.
Once you do this once or twice, you get the time down to just a few minutes to swap out a bulb. Note: don't bother with LEDs or Xenon bulbs in these locations as they are both too dim. Been-there-done-that and back again