How to merge .conf files

I'm new to Nginx. I read quite a bit but I can't find how to do what I want. I've done what seems logical to me, but nginx -t keeps saying too many statements. I want to merge 2 working nginx .conf files. One is for Librenms and works for:
http://librenms + /smokeping

The other is for

http://librenms but has a different root (nfsen)

can anyone help me merge the 2 conf files so I can have

http://librenms
http://librenms/smokeping
http://librenms/nfsen

Thanks