Each pack of refill comes with 3 folder pockets. When placed these 3 pockets together, the button of each pocket will be on top of one another. This will take up spaces.
If only that the position of the button of each folder pocket could be reposition, with one pocket having its button positioned slightly higher, one pocket with button position remain unchanged, and the last pocket with its button positioned lower. This will take up less space when the 3 pockets are placed together.