i would start by removing whole thing then if you want to split you can when its off
remove both lights at the back (not the hatch lights) 2 screws under each side
remove 3 screws each side from the wheel arch liners into the bumper (either remove wheels or jack car up to make this easier)
remove the 2 screws right at the bottom of the bumper kinda in line with number plate, get a friend to hold bumper whilst you disconnect the number plate lights/parking sensors
job done