To add a link to your referral program in your WooCommerce store menu:
- Log in to your Wordpress dashboard
- Click on Appearance and click on Menus
- Select a menu to edit (e.g. Product Menu, Account Menu)
- Under Pages, you can find the Refer A Friend page by click on Search and searching for "refer"
- Check the Refer A Friend page and click Add to Menu
- Rearrange your menu as you'd like
- On the top right hand side, click on Save Menu