Certificate Common Name Problem

[happymyh]

Hello,

it's nice to meet you guys.

I installed ISPconfig 3 and one of my clients asked me to install certificate for
his website.
Client domain is domain.com.
But he asked to make certificate for secure.domain.com

I searched the ISPconfig 3 interface, but I cannot find the section that I
can set up common name (secure.domain.com) to make CSR.

What is the default common name of CSR when I fill out the SSL section(company name and so on)?

This is very urgent to me, Please help me

[torusturtle]

You have to create the domain secure.domain.com
I don't think it is possible to create a CSR for a subdomain or aliasdomain.

Or you buy a cert for *.domain.com