how to add variants in grandse pos billing software?

Product variants: ( Go Settings click variants then add variant)

You can add any number product variants/attributes and these will be tracked automatically on purchase/sale. There print barcode/label page for each product will show the new barcode image if there are variants available for the product. This will help you to manage the products well specially for those who need to track the products attribute i.e, sizes and color etc.