Every room has a quiet period even if the site does not
A twenty-four hour operation is not uniformly busy. Drivers are out on the road for most of the middle of the day, the crib room empties after each meal break, the administration office thins in the afternoon and the meeting room is only used at handover. Those gaps are real, but they are short and they occur at different times, which is why a single attendance window never fits.
Establishing them takes a conversation rather than an inspection. The people who work on site know that the amenities block is deserted between half past two and half past three and that nobody enters the training room after lunch. Capturing that knowledge and putting times against it converts an apparently impossible schedule into an ordinary sequence of short tasks.
