The Search field is ideally suited for the Run WordPress Search action. The field works the same as a regular Text field but is provided so that you can style it separately from other text fields on your form.
Demo
Adding a Search Field
To learn how to add, edit, clone, move, resize, offset, or delete a search field, please click here.
Field Settings
To edit the settings for this field type, click the settings icon on the field itself. Click the Save & Close or Save button to save your changes. If you do not want to save your changes, you can click the Cancel button or click any other form element to close the field settings sidebar.