astrobandit21
Read the setup guide next time. https://forum.plutonium.pw/topic/13/plutot6-server-set-up-guide
Make a copy of the bat file and the cfg file and rename them.
Edit the copy of the bat file to have a different port and to use your second cfg.
(You must forward the second port as well if you are behind a DNAT!)
Edit the .cfg file.
Start the server through the new .bat file.