I can tell you that most major retailers (target, walmart, etc) most definitely have a system. It not only specifies which aisle to put things on, but exactly w

I can tell you that most major retailers (target, walmart, etc) most definitely have a system. It not only specifies which aisle to put things on, but exactly which shelf, and how much space is allocated for that product. I can't remember what they're called, but they're required for every product sold in those stores. When I worked at Walmart in college, we were issued these plans weekly. Obviously this is probably not the case with smaller retailers.