I'm new to patch manager and trying to make a custom report that shows me all the computers that do not have Symantec Endpoint installed. I've tried looking at the Patch Manager documentation but I'm having a hard time coming up with a way to just show a list of computer names that do not have a particular program. I have been trying to modify the configuration management report - Installed Programs and Features and I can get a list of computers that do have Symantec installed but I'd like a way to get the reverse of that. Any ideas?