@datpde said:
USER1 can add domain
WRONG!
Add domain and create a website are different.
Add domain means: add few domains under a website not own path like
/home/domain.com/public_html/domain1/
/home/domain.com/public_html/domain2/
/home/domain.com/public_html/domain3/
So it should be
/home/user/domain's/public_html
or
/home/user/domain's.com/
Note:
Addon domains allow you to control multiple domains from a single account. An addon domain links a new domain name to a directory in your account, and then stores its files in that directory.
and
Add domain like this:
Domain aliases are domains that you own, but which do not contain any content. Instead, they point to the contents of another domain or subdomain on your account. This is useful, for example, to hold a domain that you will later sell, or to redirect traffic to another domain.
Hope you clear what I want to say 