Height above world XY plane

Can someone explain to me how this function works? Or what it’s purpose is?
I find it hard to get the ground plane located at the base of my objects. I’m not clear why it can’t just be at zero. But if I put it at Zero, it’s below my geometry.

Thanks for any advice you’ve got.

Hi Alex - are you asking about GroundPlane settings? The height is in World Z, in case that helps. You can click on the little arrow to the right to be able to set by clicking, incl;uding snapping to geometry, in an elevation view.

Any luck?


Thanks, clicking on geometry solves my problem and is a great function.