How do I add a new product to an upcoming Subscribe & Save delivery?

Simply log into your account here: https://callaloobox.com/account

Click Manage Subscriptions and scroll to the bottom of the page with your subscriptions. Click Add a product. You can either search for a product by name or select the item you'd like to add.  

Once on the product page, you can adjust the quantity you'd like to order.  Then hit Add Product.

Your new item will now show on your subscription list.