In Operation Lead Time with Multiple Components, if you decide to make 200 units with one machine, it takes nine hours (setup plus run). If you then decide to use two machines, it takes five hours for each machine, because the setup time is the same for each, but the run time is halved.
Some adjustments may be necessary when operations overlap. This occurs when some units proceed from one operation to the next before all units for that operation are complete. This reduces the aggregate lead time for completing multiple operations. Specify the number of overlap units in Routing Maintenance (14.13.1).