1. Locate the User Citizenship/Residency object in the Select Objects tab under Constituent Information.
2. Click on the object to add it to your list.
User-added image

3. Then in the Display Fields tab, you can set the Ethnicity field to display by clicking Select Fields.
4. In the Select Display Fields popup, expand the User Citizenship/Residency object and select Ethnicity.
5. Click Select.
6. Save your list.
User-added image