That's not what this thread is for. This thread is so the shop owner can add a custom message on the checkout page that doesn't change. I believe you want something like this...? https://help.shopify.com/en/manual/online-store/themes/themes-by-shopif...

Thanks! Just adding this in here... It didn't pull up for me either at first - had to go searching. For others reading this, if you type in the search bar "notice" - scroll to the 4th section down "Checkout Shipping" and you'll find "Shipping Method ...