"Sales personnel" are employees who are tasked with getting new clients, retaining old customers, finding and promoting products, and overseeing regular purchases. They can be hourly, salaried or commissioned employees, depending on the business hiring them.
The exact duties of sales representatives depend on the company that has hired them. At one-stop-shop retail stores, the duties of salesmen are to seek out people who seem lost or confused and help them find and choose a product to buy. Sales representatives at supply chains or warehouses have more hands-on objectives, such as physically going to retailers to sell regular supply contracts and officiating proper payments and timely deliveries.