1) Store design objectives include implementing retailer strategy, influencing customer behavior, providing flexibility, controlling costs, and meeting legal requirements. 2) Store layout, lighting, color, music, scent and other atmospheric elements are designed to attract customers, encourage exploration and impulse purchases, and provide a satisfying shopping experience. 3) Merchandise is placed in prominent locations throughout the store and within categories based on factors such as customer traffic flow, demand, and complementarity to maximize sales.