Nope, its more than just storage. I have used it to remove and install the roof on my own on a number of occasions - as have others who have this kit.
Initially you need to release the roof securing bolts at the sides and at the front. This allows you to raise the roof off the car body (the same as if you had two people). There are two brackets that fit under the rear of the roof, one on either side. Whilst they have a felt cover, I find that its better to put a towel across the back, in case of slippage when moving the roof.
Second step is to fit the bar that connects across the two holding brackets and tightens with thumb-bolts
The next step is to fit the bar that connects from the front of the roof (you have to raise the roof slightly to get the holding bracket under the front of the roof) to the back bar - again secured through thumb-bolts
Finally, the carabiner clips secure to the top bar and you gently raise the roof up.
First couple of times it took me around 15-20 minutes to go through (double checking to ensure there were no scratches), but usually it takes about 10 minutes.