1.  Go to Communities > Forms: Registration.
  2.  Hover over the Donation Page and select Website Info.
  3. Click on Registration Form Options and go to the section for Attributes (below Registration Types) and mark Yes to "Would you like to accept additional donations for this activity?"
  4. Go back to Website Info and click on Form Customization.
  5. Select Individual Registration under Website Forms and click the Fields Order and Label Text Option at the top of the page.
  6. Scroll down to the section listed Donation and update the header to the text of your choosing. In the Section Note field you can add additional text describing the fields function.
  7. Click Save & Done and then update the web page.