If you do not understand what’s the purpose for each option, please read the instruction below:
- Single field: to display this field on the single product page
- Price: use the options as the additional option with a price
- Email field: include the field value in the WooCommerce’s email
- User field: to use the field value as the Custom User’s Meta
- PDF Invoice: to show the field’s value on the PDF invoice file, generated by PDF & Packing Slips plugins
- Order field: to show and use the field on the WooCommerce checkout page.