During a block and between blocks are different jobs
While a course is running, the room needs a daily routine aimed at keeping it usable: tables and chairs reset, waste cleared, floors attended to, whiteboards cleaned and any refreshment area serviced. That is a short and repetitive list and it happens at the end of each teaching day, which is a predictable time in a way that most offices cannot match.
Between blocks the requirement changes entirely. The room is empty, furniture can be moved, floors can be treated properly and detail work becomes possible. It is also the point at which the room can be returned to its standard configuration after a week of being rearranged. Treating that as a scheduled reset rather than an ordinary attendance is what keeps the facility presentable over a year.
