This article will go through how to create pack sizes for a new product.
First click on New Product under Inventory. Add the product details as you normally would. Once you've completed these details, scroll down to the bottom of the page.
Next, check the box if your product has pack sizes. You will then be able to add you pack size variant, label and quantity.
Once you’ve filled all the fields, click on “Continue to Summary”. If everything looks good, create your product.