Use the lamp tool. For the US library, the objects are in the Lightworks 12 folder. Be sure that you are loading your entire ArchiCAD Library 12 folder, and not just the Object Library 12.lcf file.
Cheers,
Karl
One of the forum moderators
AC 27 USA and earlier • macOS Ventura 13.6.6, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB