VDO Panel lets you change your existing installed domain via the Main Domain field, in the Branding section. To change domain, you must have to point your domain or subdomain to the server's Main IP Address.
To point a domain or Subdomain to the server's main IP address, you can follow a Record Update Guide. You can manage Web hosting control panels like cPanel or Plesk as well as Domain Control Panel.
For this purpose, you can follow the following links for different providers:
For GoDaddy.com : https://sg.godaddy.com/help/change-an-a-record-19239
For Google Domains : https://support.google.com/a/answer/2579934?hl=en
For Dynadot.com : https://www.dynadot.com/community/help/question/create-A-record
For NameSilo.com : https://www.namesilo.com/Support/DNS-Manager
To change domain:
From the Left Pane, click Branding.
The following parameters display.
Specify the following:
Main Domain: Enter the name of the domain you want to use instead of the existing installed domain. By default, the name of the existing installed domain displays here.
Alias Domain: Enter the Alias name if you want to use it for the Main Domain.