Dropdown Custom Fields
1. Hover over Settings, choose Custom Fields.
2. Click the Field Type to select a Dropdown. If you do not yet have the field set as a dropdown, click Change Field Type.
3. Click Dropdown.
4. Choose Yes! Delete the Existing Data and Change this Field.
5. Enter dropdown items. Click Save & Close.
Leave the first line blank to keep an empty field when a choice is not selected.