YITH WooCommerce Save Cart for Buy Later is a plugin that allows your customers to save products they added to cart and purchase them at a later time.
The integration between these two plugins allows showing the “Add to Wishlist” button in the “Save for Later” list.
To do it, you need to install and activate both plugins, then go to YITH > Save Cart for Buy later > Settings and enable the option Show “Add to Wishlist”.