Solidworks 2015 Better

: Improvements were made to the Treehouse tool, allowing users to visually set up assembly hierarchies before even starting to model.

If you are using SolidWorks 2015 today, direct upgrade to is possible (files forward‑compatible), but you will need a current subscription. Skipping versions may require intermediate file saves (e.g., save as 2017 then 2020) if mixing teams. solidworks 2015