Hello,
Have you tried to draw lines and points in Agisoft Viewer? Import the 3D tls model (created and exported by Metashape) , create an active vector layer, and draw whatever you want using the underlying 3D Tls model . Later just save the layer in DXF and here you are, in CAD program again.
The other way I am doing it is Virtual Surveyor, google it.
Best,
Darko