Nobody home. Everybody has crawled into their caves and rolled the big rock over the entrance, due to the virus outbreak ... If your loan is a "manual loan account" in Quicken, not activated for downloading information from the bank:To add extra principal payment to an existing loan go into Payment Details, click the Edit loan details button. In the popup you will find a field where to input your additional principal amount. When you save that, the existing Scheduled Reminder for the monthly payment from checking will be updated. The payoff schedule in Loan Details will also be updated to reflect the projected new payoff date.