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2.)    You can apply thru Key Off:  Start a new Key Off and enter the customer name and the transaction date.  All open invoices will be displayed on the left side of the screen.  Select and invoice and drag it to the right.  Then click the On-Account tab and you will see the On-Account amounts sitting out there for this customer.  Click on the one you want to apply to this invoice by dragging it to the right.  You can change the dollar amount to something less the amount shown.  I have displayed what this looks like for you: Receivables

Receivables > Customer Key Offs

Click New

Set Filter requirements

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