Can teachers block off break times?

Yes, two ways.

• For everyone: type breaks like 17:00-17:30 in Breaks when you create the night, or under Edit this night before anyone books.
• For one teacher: the teacher opens their private link and taps Block next to any open time. Unblock gives it back.

A time a family already booked cannot be blocked. Blocked times look faded on the booking page and cannot be picked.