When looking at your screen of your POS (see below) top left you will see the price check button.

Then this screen will appear. Scan the product you want to modify. Then select add Modifier/Variant. (See Below):

Once you press Add Modifier/Variant, create product will appear. In the example its a single can. (See Below):

We want to make this into a 4 pk. We add 4 pk at the end of the name. Select the department its suppose to be in and the price for the 4 pk. (See Below):

Once you save product and scan the product, you will get two options. One for the single and one for the 4 pk. (See Below):

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