After publish
The timetable was never the only system the school needed.
For this school, the annual timetable was only one part of the operational load. Once the grid was published, the real week kept moving through absences, cover decisions, yard duty questions, and wet day reshuffles.
That is where the old approach broke down. The school could finish timetable work in one place, then immediately jump into separate tools, documents, and ad hoc communication just to run the rest of the week.

