1. Go to Communications > eMail
2. Hover over the campaign name, and click Manage
3. Click the link for the Receiver Query
4. Expand the Communities field
5. Expand the Special Events field
6. Expand the Friends Asking Friends field
7. Click the Choose Event link next to the type of event you need to query on
8. Mark the checkbox next to the appropriate event/s
9. Highlight the type of participant you need to query on (Participant, Donor, etc.)
10. Click Add
  • Note: If you are using participants for multiple events, you may want to select the "or" button value to include registrants from event 1 or event 2. 
11. Click Save and Done