It shouldn't be too hard if GS could give us a setting for the resolution of the hole.
It is probably fixed at 36 at the moment (just a guess) as nothing in Archicad is truly round.
But with an option to change it 3 would be a triangle, 4 a square, 6 a hexagon, etc.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10