Previously before Shopify Unite 2021, it was impossible to change the checkout page unless one was a Shopify Plus user. Now that this functionality is open, does anyone know if it is possible to add the phone number as a required field at checkout plus include the checkbox to get alerts as in the screenshot below? Looking for a way to collect all shoppers phone numbers at checkout so that I can get them on my SMS list via Klavio. Any insight on what would be needed to be done to make this possible would be great. Please keep in mind I am not a Shopify Plus user, rather I am on the $79 a month plan.