HELP: How to change the main domain

[heasousa]

Hi,
I would like to know how to change the main domain of my account. I can see a way of changing about everything (sub-domains, add-on domains, etc) except for my main domain, which I do not understand which option will allow me to change it.
I would really really appreciate your help.
Thanks in advance,
Helena

 

[whr]

You can do that via WHM > Modify an account function.

If you are trying to change the hostname, that too can be done via WHM >> Change Hostname.