I believe on a MAC you can drag the 3D window across to another screen if you un-dock it as a free-floating window (not sure of MAC terminology).
In Windows it can be done only if you stretch the Archicad application across both monitors - I don't think you have to do that on a MAC, but I am not sure.
No matter because the 3D view will not be 'live' anyway.
You will still have to click in the 3D window to activate it so that it updates.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11