For private/single users You have to download for each machine.
Team users can use the packager to customize program packages, so the individual users just need to confirm their Adobe ID, and no extra downloads.
About licensing You’re allowed to install on Your primary and secondary machine (one user – two machines, NOT two individual persons).
You can activate /deactivate cloud licensing, and when You de-activate a license, next time the machine contact the Adobe server the license goes passive
Per Ottesen