Trying to better understand ports in CFTunnel

Hey there!

I am hopeful to find someone who could better explain to me the following in tldr.

How do I configure a custom port (tcp/udp) connection to be passed through for a self hosted application to work (like a voip phone)

I’ve found several resources that (kind of?) contradict each other.

1 publication said that the cloudflared client needs to be installed on every client for that to work
another publication said that as long as I have 1 “entry” server, I need to configure 1-2 lines or something and traffic will be passed.

but so far, I have had 0 luck getting it to work.

So, for example, to pass data through (arbitrary) port 5545, what do I need to do?

Thank you all in advance