If you want to set up a product as a “parent” product with multiple “child” products, you can do so by using the Inventory section of the product form (see page 53for more information about inventory products).
To add a new sub-product, enter the number of sub-products you want to add into the text box at the top of the section and click Add a Sub Product.
This will make as many copies of the main product as you have entered and bring up a screen that allows you to edit them.
Here you can also choose the display type – as decribed on page 53. You need to also tick the box Yes if you are adding child products to tell VPCART that it needs to look for them.
You can also see a list of each child product associated with this product and click the edit link to quickly access them.