Sorry if hijacking this but I wanted something I think is the same for a long time.
If this is not what you have in mind @Hubertus please point out, I will then create another thread...
I am running Node-Red with Home-Assistant and have multiple tabs for different locations in my house and such.
What I am am thinking about is that you can control the grouping by naming the tabs with a separator char or something.
See this example:
So what if the "/" will work as a trigger to group the three tabs under "House" with a drop down menu:
This would not need anything special, just naming tabs will trigger grouping...
