Using a Grid Meter to view AC Loads on Cerbo?

Can I hook up a Grid Meter to the AC output to enable the “AC Loads” box to populate on the Cerbo overview screen?

And if I put another Grid Meter on the AC input or my Phoenix hanger, will that enable the “Grid” box as well?

Would it allow me to trigger events in case of shore power disconnect? (Maybe requiring NodeRed)