The report covers every room with its specialty and how late each person is in, the rovers and breakers, call coverage day and night, and the day's call-outs. Email opens a draft in your own mail app with everyone above in the To line — the board cannot send mail on its own, so you send it.
A 0645 start gets the 0900 break and the 1100 lunch, plus an afternoon break if they are here to 1915. An evening break goes to anyone whose shift runs past 1700 — someone off at 1700 does not get one. Every slot stays editable in the break grid, needed or not. Anyone whose shift ends before the room does needs a rover to take over.