Additional Field Placement

Placement is available for Additional fields.

Before billing form

Places the field before WooCommerce billing fields.

After billing form

Places the field after the billing field group.

Before order notes

Places the field immediately before the order-notes area.

After order notes

Places the field after the order-notes area.

Recommendation

Choose the location that matches the meaning of the field so customers encounter the question at the right stage of checkout.