Great article. I have just a couple of points to add. While it is true that most retail sales people need to merchandise stock as well as sell, most of the merchandising is done before the store opens, when no customers are present.
For example, cosmetics retail sales associates usually stock their counters before the store actually opens. They also order the appropriate stock and check in merchandise received. They do have daily sales goals and with proper consultative skills should be able to make their quotas.
If a customer approaches the counter and asks for a product, the representative should get the product, but then offer a three minute eye consultation to make the customer’s eyes appear greener. The sales representative now has an opportunity to raise their average unit sale numbers by offering additional products.