Leighton works in a warehousing company as a section leader. As a part of her job, she needs to train and evaluate the employees. She also makes sure that the employees constantly remain motivated to carry out their tasks efficiently. Thus, as a section leader, she is heavily involved in the day-to-day production process of the company. In the context of the management hierarchy, Leighton is a _____ manager in the company. first-line middle top general