1.  Log into Sphere
2.  Go to Communities/Special Events/Friends Asking Friends/Kinterathon
3.  Hover Mouse over event name and click Website Info
4.  Click on Form Customization
5.  Click select next to join as an individual form
6.  Click on Standard Event Fields
7.  Mark the "voluntary Donation amount" field as inactive
8.  Save
9.  Repeat for all registration forms
10.  Go back to the main checklist and click the green "Publish" button