I copied a skin after this video: https://www.youtube.com/watch?v=ZNsw0EfnviU and added a map.
The map should always show the appropriate floor plan (basement ground floor and upper floor) for the selected node. So far so good, I got it done.
Now I have different times when I took panoramas in the same rooms (but not in the exact same place).
My solution so far is that I add 3 new floor plans for each date, on which I place the new panoramas and which are labeled accordingly. Is there a more elegant solution?