Changing LibreTime storage path

Hello,
I am trying to change the storage path for Libretime and can make the changes to /etc/libretime/config.yml but the documentation also says to update nginx to reflect the new changes. However, I am not sure what options I need to specify in nginx. Can someone advise what I need to do and more specifically which nginx conf file I need to modify. Is it /etc/nginx/nginx.conf or /etc/nginx/sites-available/example.com.conf

Your help greatly appreciated.

Thank you