On the TV
A message across the top of the TV in the foyer, above everything else. For "service moved to 6pm" — it appears within a couple of minutes, without waiting for the hourly sync.
Leaving the end date blank keeps it up until somebody takes it down. A date is safer: nothing looks worse on a wall than last month's urgent notice.
Standing slides take their turn in the rotation, between the calendar days. For things worth saying that are not events — who to see about serving, how to give. The month grid and "Coming up" stay on screen around them, and each slide is up for about nine seconds.
A picture with no lines fills the screen — use that for a flyer. A picture with lines sits on the left, the words on the right — use that for a QR code, so it is well away from the calendar's own code in the bottom corner and the two do not get scanned for each other. A heading works with either.
On the printed card
Standing notes printed at the foot of the calendar card, one per line. They exist so something on a regular rhythm is one sentence rather than eight identical dated lines eating the card.
Anything marked Routine is kept off the card entirely, so a note here is how people still hear about it. It appears on the next card generated, not on cards already printed.
Builds a PDF of the next two months and emails it, ready to send to the printer. Takes a minute or two — the email arrives on its own, and you get one either way if something goes wrong.
Who has said they are coming. The contact on each event gets one email a day with the whole list, on days when something changed.
Send every contact their list now, instead of waiting for the morning. Useful for checking it works, and for the day before something when a leader wants the numbers in front of them.
Who may open this page. Signing in checks the Google account against this list, so adding somebody here is what lets them in, and taking them off is what stops them — no passcode to change, and nobody else disturbed.