Step 1
From the POS sales terminal, click on the adjust invoice button
Step 2
When prompted, enter in the invoice number.
Step 3
When the invoice comes on the screen, click on the change button next to the customer you wish to change
Step 4
Specify the new customer for this product by searching existing customers or providing their information. Click on "Save". The customer registered for this product is now changed. If you like, you may print out a new receipt using the Print Receipt button from the screen.