In the "Adjust" area, you can adjust or change the settlement type/payment method of a closed invoice.
To do this, select the "Admin" button on your iPad and in the following window select the category "Bill Management".
Now select the desired invoice by touching it and click on "Adjust".
In the next window you can now make the desired changes.
Select the desired "New" settlement type here.
Here you can enter the reason for the change.
To complete the process, click on the "Save" button. If you wish to cancel the adjustment, press "Cancel"