Hosting other sites on the Ghost NginX platform

I am wanting to add another site to my NginX server hosting Ghost.

Looking at /etc/nginx/nginx.conf I can see that it looks like I might just need to add the 2nd site details to conf.d and sites-enabled.

As there is currently nothing in conf.d do I just add configuration details for the 2nd site to a file in sites-enabled or is there a lot more that I need to do? I am not worried about certificates as I can manage that with my reverse proxy.