Verification

Test	At one press on a long job, a supervisor watches for one hour with a stopwatch. On 30 cycles, time how long the hands are busy cutting and packing, and how long the person waits. Note the cycle time, and whether the press beside it runs a long job too.
Cost	About $45: one hour of a supervisor, at $45 per hour. Nothing is bought, and the press keeps running.
Duration	One hour at one press
Confirmed if	The hands are busy for less than about a third of each cycle. One person then has time for the parts of a second press.
Ruled out if	The hands are busy for more than half of each cycle. One person cannot keep up with two presses, and only a way that removes the cutting applies. Between a third and half, it depends on the press beside it, so that press is timed too.