You will need a flat blade screwdriver to remove and install the luggage rack.
1. Pry with a screwdriver and remove the three plastic holders of the trunk shelf from the holes.
2. Pry with a screwdriver...
3.... and push in the decorative lining of the opening of the middle seat belt.
4. Push inward both buckles of the buckles of the middle seat belt...
5.... and remove the trunk shelf from the car.
6. Install the trunk shelf on the vehicle in the reverse order of removal.