Nginx-same domain different ports

Hi everyone,
I have been playing with Nginx but still unable to see working a "simple" configuration.
I have configured nginx as ssl and for 1 host run perfectly. This is the simple config in available site folder:

server {
listen 443 ssl;
access_log /var/log/nginx/mydomain.com.access.log;
error_log /var/log/nginx/mydomain.com.error.log;
server_name mydomain.com;
location / {
proxy_pass http://192.168.1.1:80/;
proxy_read_timeout 90s;
}
ssl_certificate /etc/letsencrypt/live/mydomain.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/mydomain.com/privkey.pem;
}

My problem now is that I would like to add another location, i.e. http://192.168.1.2:80 and not sure how should I do it as the domain and if possible the listen port are the same.
I have been searching but don't see anywhere this configuration an would appreciate if anyone can provide any light on this...

Thanks!