My client NEEDS a referral code system.
The Referral code system should:
1) be a tab in WooCommerce settings
2) Add referral codes (ie Google, Bing, Yahoo, Advertisment, Radio, Word of mouth, Familiar with Brand etc) as post_meta items, not as post types
3) Have the referral codes appear in the checkout form.
4) Include the referral codes in order reporting.