To solve the problem we make a shoe racks under the stairs. But we are to lazy to put it there. So we decided to put one shoe rack by the front door. So when we arrive we can put the shoes in it. Of course all of us have more than I pair. I even have more than six pairs. First of all we decided which shoes will be used frequently and which one is used less. The shoes used frequently will have space at the shoe rack by the door and the rest will be put in the shoe rack under the stairs. Besides shoes, we also spare some space to put shoes equipments such cleaning rags, shoe polish and other stuffs.
We design unused space on the top of the shoe rack to put our bicycle helmets.
Hope it can help to give an idea to solve the problem.