Agent Health Enforcement group selection? What is that?

Hi there

So i am setting up new 9.6 SP2 server to migrate my 9.5 environment into and there is this new  (And very welcomed) setting for an Agent Health. Under Enforcement area it has an option to - "Periodically scan for agent health issues using the following group". And than is seems it can "Automatically remediate any issues found after scan"

That us great and all but ... What are those groups? Where do i set them up? And what exactly are they for?

Thanks a ton!!!!