1.  Navigate to Communities > Forms > Registration
  2. Hover over the form's name, click Reports
  3. Select People:Additional Contacts & Waitlist from the first drop down menu
  4. Select People: Waitlist from the second drop down menu
  5. Click Run Report
  6. Click Next
  7. Mark the necessary fields you'd like to display in your report
  8. Click Finish
  9. Mark the radio button beside No, run report immediately
  10. Click Run Report