If you working within a Kintera Thon, you could enable a static additional fee available for selection.
To enable this option:
- Navigate to Communities>Special Events>Friends Asking Friends>Kintera Thon
- Hover over the event and select Website Info
- Click Fee Structure
- Mark the corresponding Enable Additional Fee box
- Enter a description for the Fee, for example "I'd like to cover Credit Card costs.."
- Click Add Additional Fees, which acts like a save button
- Navigate back to the Webinfo Checklist and click Publish This Event Now