Brainmaniac:
You can create a 3D Document by right-clicking in the 3D Window and selecting
New 3D Document from 3D..., or use the flat
Marquee to Copy and Paste from the 3D Window. The 1st creates a live connection to the model, the other just 2D elements.
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David