Thank you for replying.
That's a pity. I am using a Graphics tablet and have 2 buttons on the pen. One (right-click) is for rotation and the 2nd one is middle-click (pan)

I guess it's not possible to put zoom somehow additional on the pen?
Then maybe I just have to find a comfortable shortcut for zoom.

And by the way. The software is amazing. I am very new to it but instantly fell in love with it. Thank you!
Just the filleting/chamfering is (often) not working as I would like and giving errors/deformations. Have to learn how to fix those issues.