Removing the cargo hatch allows you to enlarge the trunk space.
Clear all items from the trunk to ensure that nothing will get in the way when you fold down and remove the cargo hatch.
Grasp the cargo hatch handle and push the hatch toward the rear seats so that it folds.

Push the left-side locking clip forward and, at the same time, lift the folded cargo hatch slightly.

While continuing to hold the cargo hatch up, push the right-side locking clip forward.

When the cargo hatch is free from the hinges and fully loose, you can pull it out from the trunk.

Place the cargo hatch where it can't get damaged or fall.