As a Roblox developer, it is currently too hard to edit a non-root place directly from studio. The only way to edit sub-places from studio is to open the main place, go to the Asset Manager, and select a place there.
You can edit sub-places directly from the create dashboard, but I wish we could do this directly from studio.
It appears this does not work from the Recents tab, and I do not plan to open the experience tab, change the group, and search for the experience every time I want to open a non-root place (which right now is more often than I want to open the root place).