Let's assume you have a web site www.example.com
. Now you'd like to have a subdomain sub.example.com that points to the www.example.com
web site. In this case you simply create sub.example.com as a Co-Domain for the www.example.com
web site in ISPConfig.
If sub.example.com should point to a web site of its own (instead of to www.example.com)
, then you must create a new web site in ISPConfig and use sub.example.com for that web site.