I would appreciate a short hint or which tutorial I should watch to learn this...

Yes, aware of the 0,0 positioning on canvas and objects. It would be good to be able to define the position the 0,0 point on both the canvas and the object. Especially on the object as it would make precise positioning easier.
What I try to do: to position the arrows previous and next panorama at the left and right edge of the canvas.
https://rebrand.ly/p2vr-arrowsIs it at all possible to get the arrows relative to the edges????
If you are using the Next/Previous Component the button and text elements are grouped within a container called 'button_(simplex)_next_previous'. Try moving the button and text elements out of the container.Now I manually added these functions into your own arrows: it works well, yours stay at the edge left or right, mine don't.
I got a solution but don't understand, what the difference between the two arrows are... Any idea? what parameter did I not find? All the visual available fields and settings are exactly the same.