Wix Stores Adding Additional Custom Fields to the Checkout Page

Currently, you can add one custom field of your choice to the Checkout Page in
addition to the preset fields. It is not possible to add more than one custom
field.

We are always working to update and improve our products, and your feedback is
greatly appreciated.

If this is a feature you would like to see in the future, please click Vote
for this feature and we'll make sure to keep you updated.