We recommend creating an additional user apart from the user "admin" when creating domains or hosting websites, this helps in managing user privileges and keeping your site safe. Click here to refer the guide to create non-admin user.
Login to your HestiaCP account as non-admin user using the URL
Once you logged into the Control Panel, select WEB to open the Web Dashboard and then click on the Add Web Domain button.
Now enter the Domain name and select the IP address from the list. Once you entered the Domain Name click on Save button.
Once you click on the Save button, it will shows successfull message.