Giving each attendance a distinct job
Without defined roles, both crews gravitate to the same visible work and neither does the awkward parts. The lobby gets cleaned twice and the back stairs get cleaned never. So the scope names what belongs to each attendance rather than describing the building once and leaving the two crews to divide it between themselves based on what they find when they arrive. Naming the work is what prevents both crews reaching for the same visible tasks.
The division follows what each attendance can actually do. The evening crew has a quiet building and time, so it takes machine work, detail, periodic items and anything requiring drying. The morning crew has a short window before the building fills, so it takes rapid reset work: entries, amenity checks, waste, glass at the doors and anything that changed overnight. Each attendance is then sized to what it can realistically achieve in its own window.
