I have updated my authorize-aim.php to include billing information. That part is working as it should. Is there a way to change the "Address Info" fieldset to say "BILLING address info"? If that is not possible, is there a way to add a brick/block/text with directions telling the customer that this information is BILLING information? https://www.ahacpa.org/aMember/payment/authorize-aim/
Alexander answered my question. Go to aMember CP -> Edit Messages. Search for "Address Info" string and replace it to whatever you need. It turns out that there are two "messages" dealing with Addresses. The "Address Info" message is the billing address. The "Address Information" message is the address that shows up in the //yoursite.com/aMember/profileprofile page.