1. Go to Contacts > Individuals
2. Click Advanced Search
3. Select the form/event by expanding Communities > and select the type of  form or website you are working on
4. Based on the type of form you selected, click on All Participants, Donors, Registrants, or All Contacts
5. You can Save or Run the Query at this point.
6. Once you get the result click on Choose Column
7. Expand Contacts Profile > Personal Info > Personal Data
8. Check Ethnicity
9. Click Submit