Changing orientation of model

You can but its not intuitive at all. I posted a video of rotating over here.
You have to rotate and then swap the dimension from one data box to the other.

The rotate function in most slicers is very intuitive! I use Cura and the grab and rotate works just like in your video. Very hard to mess up. The ones in carveco and vecrtric have enough visuals that they make sense as well…