You also have the ability to “quick add” products to your collections — and add multiple products at once! — without opening up the “edit” window, or closing the catalog. When you’re searching for products in the catalog, all you have to do is click the “+ QUICK ADD” button to automatically add it to a collection. You can always edit the details later if you want!
If you want to remove a product you quick added (either you changed your mind or clicked it by mistake), all you have to do is click the button again to remove it from your collection.