You can save any 3D view as a '3D Document'.
In the 3D window just right mouse click and choose 'New 3D Document from 3D...'.
The elements are still the real elements - they can't be moved or edited, but can be deleted and you can now add annotation (text and dimensions).
Is that what you are wanting?
You can read more about the 3D Document settings in the Help Center.
https://helpcenter.graphisoft.com/user-guide/89401/
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