In the allocation screen, for a specific itemcolour, the automatic distribution of the
allocated quantity on sizes (when a total is input) is calculated like the following:
- if no stock on hand is available for any of the sizes, a gaussian distribution is
applied
- if stock on hand is available for one or more sizes, the total allocated quantity is
distributed on these sizes considering the ratio of their stock on hand to the total
quantity that is available for the itemcolour