1. How to collect convex shapes together in one body in editor?
2. Using scripts?
3. By manually editing the *.node file, copying the "ShapeConvex" parameters from another *.node file?
1. This is impossible, as I understand it. Look first video below.
2. ... ?
3. This is possible! Look last video below.
Suggestion for Unigine developer team: Create a UI panel "choose mesh" in editor for physics convex shape.
standard.mp4
3_editedNodeFile.mp4