The vinyl waller can be put up with a simple nail. You can use a screw for a greater immobilization.
To align several vinyl wallers:
-draw an horizontal line using masking tape or paper tape which you can easily remove later on. you can also use a level.
-mesure and mark the gaps in between each cover on the paper tape and then define the central point for the nail/screw.
-to carefully align the vinyl wallers vertically, use a true plumb line or an improvised one (with an object attached to a thread)
Once your vinyl waller installed, the vinyl is easy to display and change with the tips of your fingers