One Worker, Multiple MachinesIf volumes are not sufficient to keep several workers busy on one production line, the manager might set up a line small enough to keep one worker busy. The one-worker, multiple-machines (OWMM) cell is a workstation in which a worker operates several different machines simultaneously to achieve a line flow. Having one worker operate severalidentical machines is not unusual. However, with an OWMM cell, several different machines are in the line.