Each MA can only receive whole numbers so where MA01 is due 17.2% of each variations they would automatically receive the rounded down volume of each variation then the stock left over is currently manually balanced out. MA01 might receive higher than 17.2% of one model and less than 17.2% of another. MA03 would likely receive 1 of the variation with the highest occurrence which in the example would be one of the units from row 36 to 76 of which there are 41.