JEG recently evaluated its manufacturing processes and discovered that the monotonous nature of jobs was contributing to employee dissatisfaction. As manufacturing worked on an assembly$-$line system, each employee had to repetitively add just a single part to the product. JEG decided to form the employees into teams and have each team assemble a complete product together. This effort by JEG to make the work more interesting for its employees is known as $\_\_\_\_\_\_\_\_.$