Hi Boniata,
So I am a bit confused, sorry for my Confusion, but HASS doesn’t actually refer to any specific thing in current use that I know of within Home Assistant.
First a note to remember for the future. As a new Home Assistant person you probably wouldn’t know this. The term HASS means hate in German, so the Home Assistant Project has not used that anywhere a customer will see it for 4 or 5 years. There are some internal code references that have not been converted yet and that gets fixed as things are edited. Some custom components have not caught up to that yet.
If you can tell us a little more what you want to do and what integrations/themes/custom integrations you are using, that would help. It seems to have something to do with a dashboard, but I’m not sure after that.