Directly supervise and coordinate the activities of mechanics, installers, and repairers.
Directly supervise and coordinate the activities of production and operating workers, such as inspectors, precision workers, machine setters and operators, assemblers, fabricators, and plant and system operators.
Directly supervise and coordinate the activities of helpers, laborers, or material movers.
Directly supervise and coordinate activities of transportation and material-moving machine and vehicle operators and helpers.