Go into Tools > Options > Business tab. Check the Donations payment option. Now you should see a Donations payment button under the Other payment button while processing a transaction. To see the total donations used, run a Payment report for your desired period. Let me know if you need additional info.
over 8 years ago
almost 9 years ago
There is now a Donation payment option which can be used to track donations. New as of version 184.108.40.206.