Group vs Resource

I don't think you can re-enable something at a lower level. What I do is modify the AppliesTo to the EventSource so it only applies to devices with a particular category. You will see some built in DataSources work this way too. So for Windows System Event Log for example you can change "isWindows()" to something like 'isWindows() && hasCategory("SysEventLogs")' then assign that Category manually to groups/resources you do want to applied to. If there are particular classes of resources that you always want this applies to, you can also custom write your own PropertySource to assign that category for you.