It is known from the principles of merchandising that the best sellers are those goods that are at eye level, i.e. at a height of 100-170 cm. So let's take this point into account when forming the display and place on these "golden" shelves that product that brings the most profit. Or you need to promote the novelty, it should also be placed on these shelves. Or vice versa, there is a nomenclature that sells well, and we know that it will be bought anyway - let's put it on a lower shelf, and give the convenient shelves for goods with good margins, but unimportant in terms of sales in pieces. It is clear that all this can be done manually or left to the line staff in the store. But what do you do if there are really a lot of products? 10,000, 20,000, 30,000 SKU? How to take into account a set of different display criteria for different groups of nomenclature? Somewhere turnover in pieces is more important, somewhere margin is more important, somewhere you need to arrange the goods by height, alphabetically, by age group of buyers and so on and so forth. The point is that the place of goods on the shelf affects the behavior of customers, and you need to take advantage of this.