I would only do one floor. It makes sense from an architectural perspective. You can define views with different cut levels and compose them in the layouts.

Hi Narska,I sent a support ticket to the swiss reseller IDC. They didn’t know the mouse I was talking about and they suggested a tip for the apple mouse… 路‍

I've just got my Space Mouse Wireless and tried it with Archicad versions 27 & 28 on macOS. Navigating works reasonably well, buttons don't at all.