Thee design depends on your individual needs.

Swapnil, Dytecture is correct. It is important to determine what your needs are--take a measurement of how much hanging rod space you need for short, medium and long items and this will guide placement of double rods to maximize space. Otherwise, consider what you want/need in relation to folding and hanging items, drawers versus shelves, etc. There are many online closet organizing sites that can help!