You can change the domain name associated with your Website Builder account. You cannot change the domain name for a free Website Builder account.
Note: You cannot directly change a domain that has a SSL certificate. Instead, the SSL certificate will need to be rekeyed.
Note: If you see the Publish button in the upper right, click the three-bar icon next to it and select Exit Designer to get back to where you can see the Settings tab.
Note: If you chose Type a domain registered elsewhere, you'll also need to contact the company acting as the registrar for that "external" (non-ITEGY) domain.