Hi, I'm very newbie with Patch Management, but I was read a lot of info (even the: Symantec Mangement Platform 7.1 - Installation and Setup of Patch Management Solution Outline).
So, I'm not sure if I have a wrong idea about Custom Severity; but as I see it, with Custom Severity feature I can to refine what patches applies to my platform and which one don't.
The short history is that I don't know how to link the Custom Severity with my patch policies, in order to be able to stablish that critical patches be installed every week without user interaction and important or other severities be installed on other schedule.