Whoever hosts is responsible for:
1) adding event to the calendar,
2) posting to sudo-discuss mailing list and otherwise promoting,
3) showing up!
4) answering the door, giving tours, and otherwise being friendly and
answering questions.
5) have a planned activity ready to avoid awkwardness
You decide when to have it, but if it's on a weekday it should probably be
no earlier than 6 pm.
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marc/juul