If you have a site added on your WPOven dashboard and you wish to change its Domain name (URL), you can simply create a clone for the site and name it to the new Domain name you wish to change to.
Find out here, How to Clone a Site from your WPOven dashboard
Once the site is cloned, you may use a search and replace plugin like, Real Time Search and Replace to replace the Old Domain name with the New Domain name in the cloned site's Database.
Finally update the DNS records for the New Domain name to point to your WPOven server.
