This feature has been open since 2012:
https://sourceforge.net/p/sweethome3d/f ... uests/484/
and duplicated some more since:
https://sourceforge.net/p/sweethome3d/f ... uests/676/
https://sourceforge.net/p/sweethome3d/f ... uests/806/

Any possibility that it's on the near future roadmap ?

ref: https://forum.freecadweb.org/viewtopic. ... 10#p261877