The web address embedded in the QR tag will be similar to https://www.franside.com/123456 and will resolve via a lookup table into your desired web site or page, of the standard format: https://www.my_own_site.com/memorial.html or just https://www.my_other_site.co.uk.
Changes to the link can be made at any time, but there will be some cost for the work involved. You will use the contact us option to let us know about the new link.
You can see how the process will work by either scanning the following QR tag image, or by clicking on the image itself.