Add new field
To add a field:
- Navigate to the WooCommerce → Checkout & Register Editor
- Click on the Add new field button.
3. Enter a Name, Field Type, Label, and other details of your field.
4. Set display rules from the Display Rules option if required.
5. Set display styles from the Display styles option if required.
6. Set price details from the Price details option if required.
7. Click on the Add New Field button.
Overriding a Default Field
When you create a new field with the field name of a default field, the existing field gets replaced by the custom field. All properties of the default field will also get replaced with new properties assigned.