Moving folders · Data Parking (the two-pane mover)
What do the Home and Home both buttons do in Data Parking?
Short answer: Each pane's Home button returns it to the root of the current pairing, and Home both resets both sides at once. Unpaired, Home goes to your user folder on the left and your Mac's folder on the fast drive on the right.
Each pane has its own Home button that returns it to the root of the current pairing; Home both does both sides at once. When the panes aren't paired, Home takes the left pane to your user folder and the right pane to your Mac's folder on the fast drive.
They're the quickest way back after drilling deep into a folder tree. See Does Data Parking keep my folder structure?