20 Miss. Code R. § 101-600-602.01
A demonstrator, who is placed by a manufacturer in department and specialty stores to aid in the sale of the specialized products of such a manufacturer, and who is engaged by the manufacturer, who are paid directly or indirectly by the manufacturer, and who work under the direction which may be delegated to the retailer, is an employee of the manufacturer. If the retailer, not acting as an agent for the manufacturer, engaged a demonstrator and the demonstrator works under the direction of the retailer and receives the salary directly from the retailer, the retailer is the employer. If the wages are paid in part by the manufacturer and in part by the retailer, the demonstrator is an employee of both manufacturer and retailer and each is required to pay contributions on that part of the salary that he pays.
20 Miss. Code. R. § 101-600-602.01