If you are publishing the site for the first time. Click "Publish" button on top navigation. The publish modal will appear. Give site title and description. And select subdomain or custom domain name for your URL.

Change URL (Subdomain & Domain) of Published Website

Login to the Dorik Dashboard. You will find your sites cards. In the site click on this icon it will open the modal for configuring your site URL.

Using Custom Domain

To configure custom domain, Please check Custom Domain Configuration →