@Joseph-Benguira, according to your instructions I can potentially use a subdomain to connect it to my whitelabel.  At the moment I have leadgenweb.win domain with appdrag and it is connect to my whitelabel.  Can I add a cname to use it for the whitelabel and leave my bare domain name to use it for creating my actual website? Example:
official Lead Gen Web website:  leadgenweb.win
client login:  portal.leadgenweb.win
If it's possible within appdrag please provide me with instructions on how to accomplish it.
Another question:  what will happen if I disconnect a domain name I am using for whitelabel to change it for another domain name?  Will my existing client's website suffer in some way?