Order Calculation is where you determine how you want to order specific goods. Order calculation is extremely important, in that ordering too much of the wrong thing can result in loss of product, whereas ordering too little of another can result in loss of sales. Order Calculation is sometimes referred to as Order Quantity Calculations.
Order calculation is set up for item groups, but you can override the settings for items within a group that do not fit the norm for that group through the Items page.
Parent topic: Maintenance