M/S Hours (multi shift hours) are the individual hours assigned to each Multi Shift Pool shift and is set by the scheduler.  For example, if an operation requires 26 hours to be completed on an M/S Pool and all three shifts are available, the scheduler may assign 10 hours to shift 1, 8 hours to shift 2 and finally 8 hours to shift 3.  These individual hours of 10, 8 and 8 are shown in the M/S Hours column while the total planned hours of 26 is shown on the prime operation only.