Can someone give me a basic rundown on how XLR Wall Plates are installed and connected to each other?

Thank you,

Rob

hello,

I'm having trouble figuring out what equipment ill need to send audio from one room to another. I mean i plug my mics into the wall and then out of the wall into my patchbay and then into the preamp right?

Now whats in the wall that connects my mics to the patchbay? Is it another patchbay? Or an audio snake cable?