Different traffic patterns through the same space
Residential traffic peaks early morning and evening, with parcel deliveries through the day and heavier movement at weekends. Commercial traffic peaks at start and end of business with visitor arrivals through the middle of the day. Together they produce an entrance that is busy for far more of the day than either group experiences on its own, which is what makes single-attendance servicing insufficient.
The practical answer is usually a main attendance timed outside both peaks plus a short check positioned between them. That check is a small addition and it covers the period when the entrance carries the accumulated evidence of the morning. Positioning it correctly matters more than its length, and the position comes from observing the building rather than assuming. A fortnight of noting when the entrance looks worst is usually enough to place it accurately.
