1. Go to Communities > Special Events > Friends Asking Friends > Build Your Own Event (Custom FAF)
2. Click the name of your event
3. Click the Administer tab
4. In the lefthand navigation, click Donations
5. Search for the donor
6. Hover over the payment ID and click Manage Payment
7. Click the Delete button
8. Mark the radio button for Reversal
9. Choose a reason for the reversal, and write a short description
10. Click Save