Can you explain how to create Multi-root workspaces?

Can you kindly actually explain how do do what this cryptic announcement suggests? And assume of course it probably needs to be applied to an existing workspace.

Also, I don’t think it’s about “related repos or projects” as much as it’s about the alternative of multiple windows being unacceptable to work with.

Please delete your duplicated topic about this, @GitandGeek :folded_hands: