When you click Scan Multiple, the Scan Multiple Invoices dialog box opens. From this dialog box, scan the barcode for the invoices you want to add to the till. As you scan the invoices, they are displayed in a list on the dialog box.

If you want to enter invoices manually, complete the Invoice field and click Add (ALT+A). The invoice is then added to the list.

Click Continue (ALT+C) after you have scanned in all the invoices to post a payment for all of the invoices entered.