At the POS there are a number of ways to set the quantity of the products you're selling to your customers. Here are the options:
1) You can click the quantity button after the item has been added to the POS - as shown below
2) You can type the quantity you want to sell, a "*" character, then scan the barcode of the product you wish to sell. Whatever quantity you inputted will be the quantity of the product. An example would be to input: 2* then scan the item. It will ring up two of that particular item.
3) You can embed a quantity into a barcode. If you want a barcode to automatically set a quantity you can print a barcode with 2*productCode embedded inside the product code and it will ring up that quantity.
4) You can create a button using a similar thing as we did in option 3 to have a button to add the product to the transaction with a specific quantity set.