Customers viewing your shopping cart can save an item to their wish list for later purchase.
To Enable the Wishlist:
1. From Under 'Commerce' in the control panel choose 'Shopping Cart'
2. Choose 'Edit Shopping Cart Settings' from the shopping cart menu
3. In the 'Enable Wishlists' field, choose 'Enable Wishlist' from the drop down menu
While in the cart there is an additional link to view your wishlist at any time in the future.