From the transaction window you can change the quantity of an already entered item by pressing on the bottom of the screen, or hitting the F9 key.
A Change Quantity window will pop up, just enter the desired quantiy of your item into the New Qty window.
Once you have entered your desired quantity, press the key to make your changes.
You can now continue with your modified transaction.
Article written with AmberPOS version 4.14.05.05