New manager insisted that everyone put their PTO on the calendar for December under threat of write ups.

Mind you, I work in a professional setting where someone being off for NOT cause a chain reaction of negative outcomes. Also, I’ve never had a manager mandate that ALL PTO be scheduled at least 30 days in advance or it will not be approved. Needless to say, this is not going over well with the team that is never had to do this before either.