Product promotion is essential to keep a product-oriented business ahead of its competition. You can use this section to promote an existing or new product by offering free products with it on buying a certain quantity of that product.
1. Click on the Product Promotions tab on the Products (Insert) or Product (Update) page.

2. On the Product Promotions page, enter the following information:
a) Minimum number of this product3. When you are ready, click on the Save Changes button.
Next: Products Management > Quantity Discounts