Write off Tolerances at the User Level [Payment Worksheet]

Hi

I am testing the write off tolerances defined for the payment worksheet at the user level and trying to understand how the Under Payment Write off/ Write off Percent Under and Overpayment Write off/Write off Percent Over works.

When I read the following in the peoplebooks, it says these values apply to only automatuc write offs. What does it mean. Can you give me an example of a scenario where it works.

"Enter the percent and amount that defines the maximum write-off for underpayments and overpayments. These values apply only to automatic write-offs. These values do not apply to standalone overpayments or underpayments. The user can enter an adjustment below the amount as long as the amount does not exceed the percentage of the payment."