Jean Zee's Group-Oriented, Polite Parcel Orb
version 1 (2022-01-22)

USE CASES
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UC1. YOU & YOUR FRIENDS WANT PRIVACY WHEN YOU MEET

This is easy.  Just setup the orb as I described in the "01_setup"
notecard.  When at least one of you is on the parcel, nobody else can
enter.  At other times, you're all elsewhere & anyone can enter (but
you don't care because you are elsewhere).

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UC2. HOST A PARTY FOR PEOPLE IN YOUR GROUP

As with UC1, it's easy.  Just setup the orb.

Be sure to tell your guests to activate the group lest the orb kicks
them!

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NOT SUPPORTED UC3. TURN OFF THE ORB

This is not supported at this time.  I'm not convinced it should be
supported.