[Patch Management] How does it work?? Initial configuration??

Hello everyone!

I'm working on a POC for Client Management Suite. Now, i'm taking over the part of Patch Management. I have read the user guide, watch a couple of videos from this forum, but i cant really understand how it actually works. 

Could anybody explain me:..

What's the initial configuration???

How it actually works??

Any videos or how-tos??

Thanks in advance!