Calculate the minimum manning level for a machining department:  All machines are on the same area without partition. Machining time on a CNC machine is more than 45 minutes for each part.  1 horizontal and 1 vertical band saws  Maintenance group with 2 technicians, each with 25% duty  5 vertical mills  5 lathes  2 5-axis CNC mills  2 CNC lathes