1. The first you have to create a group fields, it's the same create a category but you need to assign this group to categories. No categories = Assigned for all categories and you can choose a layout for the group fields.

2. Find the nav Products/Custom fields from the left navigation to manage the list fields

3. From the product add/edit page find the FIELDS & OPTIONS tab to add custom fields for the product.

4. Result from the front-end

List Fields Type

1. Text
2. User call name: this field has an option that is called name type: fullname or firstname + lastname
3. Address: this field has an option that is Apt, suite etc. (optional)
4. Email: use this field as email instead Text field
5. Dropdown
6. Radio
7. Checkbox
8. Checkboxes list
9. Textarea
10. Editor
11. Calendar
12. User
13. Zone country: provide a countries dropdown list
14. Zone state: provide a states dropdown list
15. Subzone: provide a subzone(parent is zone state) dropdown list
16. VAT: the VAT field will validate the VAT(EU) number of customer. Note: the VAT field needs SoapClient PHP