The same knob you used to release the hard top also releases the boot and allows you to fasten the soft top down.
Use that knob to open the boot and fold the whole top forward, including the rear section that has the rear windows.
Then close the boot and fold the rear section of the top down until it latches. Then use the handle to pull it down.
You need the special tool to latch both sides near the B-pillar and the windshield.