With manual shipping, you set shipping rates, choose your own insurance and buy your own shipping label. You determine the price of shipping with your preferred company before sending the object. 

If you want to add shipping insurance, you need to arrange it yourself with your chosen shipping company or insurance company. When you're submitting your object, make sure to add the insurance cost to the shipping rates you charge. Note that you must find insurance that covers your object type, destinations and the full value of your object.