HA OS 16.3 - HA via HTTPS + Grafana Add-on via HTTPS (how?)

New to HA! Very cool tool…

Apologies… I’ve seen several internet discussions about this topic and just as many suggestions on how to correct. These include adding env_vars to the plugin, creating another Nginx host entry, editing grafana.ini…

I’m accessing the HAOS 16.3 UI via HTTPS and when I create a dashboard using a Grafana link (iframe), I’m getting the error about both HA and Grafana needing to be HTTPS.

I’ve got a reverse proxy host setup for HA and I think setting up another host entry for Grafana is the right track. Can someone point me to a guide or help me with the steps?

Cheers.