This product type can be illustrated like bottles of mineral water, and its boxes. In every box of mineral water contains a ratio of bottles.
When selling process goes by, if a customer wanted to buy the canned cokes, but the quantity didn't adequate for him, the stock of boxes will be automatically reduced to add the quantity of cans according to the ratio. This kind of illustration commonly called one level of derivative forms.
I. Via User Interface
Step 1. Select Add on Product Menu set type as Multiple UOM
Add New Product like mineral water and have 2 variants (Bottle and Box).
Step 2. Edit Variant (Bottle) by double clicking
Step 3. Set the ratio to the product
We entered a ratio of 12 bottles = 1 box
Step 4. First stock 10 box, After selling 15 bottle, it will automatically reduce its parent's stocks if the quantity doesn't adequate when selling process occurred.
II. Bulk Operation via Import CSV function
You can also add the StandardWithParent type of product from your CSV file just by adding 3 columns labeled as "Type", "Parent", and "Ratio". Here is the example of the CSV file for another type of illustration (Mineral Water(Aqua), Bottle, and Box).