I am setting up some Grafana dashboards which retrieve data from Azure. I have managed to setup most of the required panels but one that is eluding me is Authenticated Users.

So in azure we have app-test-UK-dev-euw-appinsights -> Metrics

And this returns accurate data in Azure

So over in Grafana I can see most of the Log-based metrics

And if I choose any of those I see data that matches what I see in Azure, all cool and froody so far. But what I cannot select from the pulldown list in Grafana is Users, it is simply not there.

Is this correct?
Why do some Log-based metrics appear and a few do not?
Is it me, am I missing something here?

Any thoughts please folks.