Depending on setup, the Payment on Account window may or may not have additional fields of Surcharge Amount and Payment Collected.

Additional Fields
Note: For more information on surcharging, see Surcharges on Payments.
These fields are displayed if a Surcharge Product is selected at Accounting / Setup / Locations on the Preferences tab.

No Additional Fields
The Surcharge Amount and Payment Collected fields will not be displayed if no Surcharge Product is selected at Accounting / Setup / Locations on the Preferences tab.

The Payment on Account window will be be displayed like the example below:
