To add a customer to a Closed, Layby, Parked, Return or Parked Return sale after it's been completed in the Sell Screen.
- Retail POS for Mac or PC
- Navigate to Sell -> Sales History
- Search for the sale that you need to add a customer to
- Click the sale to expand
- Click Edit Sale
- Search for the customer in the Customer field
- Click Save
If you are attaching a new customer, you will need to create a new customer profile before you can attach it to the completed sale in your sales history.