Const This access level is set when the users selects "Anyone" or "Anyone On The Same Network" in the Access Control settings.
This access level is set when the users selects "Only People Sharing this Home" in the Access Control settings. On this level password setting is ignored. Requests to the HAPServer can only come from Home members anyways, so there is no real use to it. This is pretty much only used for the AirPlay 2 protocol.
This defines the Access Level for TVs and Speakers. It is pretty much only used for the AirPlay 2 protocol so this information is not really useful.