MINECRAFT: How to Run Two Servers on One Hamachi?

I just learned how to host a Minecraft server for my friend to join using Hamachi. It is very simple.

I was wondering, is it possible for me to run another server for another friend to join? I want to have my own world with him.
(I know the answer is yes).

Would I have to download a whole new server file for my other friend to join? Or am I able to do this using the same server file I downloaded?

Again, I'm using Hamachi because I'm unable to port forward.

Please run it down to the specifics since I'm still new to this.

You can run multiple servers on one computer. BUT they need to use separate ports. One can be 25565 and the other has to be different such as 25566. Whoever wants to join has to type IP: PORT. Example: 217.156.4.36:25565 or 217.156.4.36:25566.