My customer has a shopify site that integrates with our custom application. We have manually mapped the shipping methods to match the ones in our application. However, they use the Free Shipping option (below) often when creating manual orders (they don't want that option for their customers to select) and are asking to be able to select the free shipping but also define the shipping method to be shipped. ie, Free Fedex Express Saver or Free Fedex 2 Day.
So my question is two fold, this "Free Shipping" option below appears to be a default Shopify thing? Can it be edited anywhere to change the name? Also, can more options be added that are only visible to someone doing a manual order?