How do I enter quantity? or When do I add/change quantity? For Handheld scanner

How do I enter quantity?

Handheld Scanner user:  Once you scan your items, it will give you a summary of that one item you scan. The quantity will be highlighted and you can press the number (the amount you brought), then press either blue key.

When do I add/change quantity?

Below is three examples of when you need to add/change the quantity?

1. I brought 3 cans of bake beans. What do I put in the quantity?
   When you scan one of can of bake beans, you will need change the quantity to 3.
   
   
2. If I have brought items in KGs or in bags. What do I put in the quantity?
   You will need to leave the quantity as 1.
   
   
   
3. If I pay for each of the same items. What do I put in the quantity?
   For example; If I buy 3 avocados for $ 2 each.
   When I scan I would put the quantity as 3.