UIPath Studio publish package to specific Orchestrator "Folder Packages"

I’m fairly new so bare with me. I’m using Orchestrator in a Modern Folders setup, and I don’t understand how I publish packages directly to Folder Packages. Can someone explain what I need to get going with this? Publishing to default Tenant Packages works fine… It’s just this custom bit I don’t get.

So today, all of a sudden, top level folder feeds were available to select when clicking publish.
Idk what did it, robot service restart prehaps?

Question remains though, is it possible to have separate feeds for subfolders?

Also, trying to modify and get this going with our production environment, but again, new top level folder created with “Create a new package feed for this folder” option ticked, does not show up in studio in publish options :confused: