Michael Soluyanov writes:
This is add-on for Blender 2.8x. It creates grouping-like workflow (Ctrl+G for make group) using regular instances.
This add-on uses regular Blender instances, so you can work with "groups" made by this add-on, even if you haven't this add-on, or render file on render-farms.
Version 0.2 features ungrouping (Ctrl+Alt+G), make single user and group menu(Ctrl+Shift+G).