From the full-cover position:
Lift up the handle and pull it backward to disengage the cargo cover's attachment pins and then release.
From work position:
Grip the handle and pull out the cargo cover in the grooves - pull to the full-cover position. Lift up the handle and pull it backward to disengage the attachment pins and then release.
Retract the cover with its attachment pins outside of the side panels until it stops in the retracted position.