The manager opens the week view on Monday at half past seven.
Each cleaner is a row and the visits generated from customer patterns sit along it with travel buffers between properties.
One cleaner has rung in ill.
The manager marks her absent and the system lists her six visits for the week with a cover proposal for each: cleaners free in that window, in that area, with the skill the property needs, and whether they already hold the key.
For the flat on the high street the cover does not have the key, so the manager records a handover from the office key box and the customer receives a message saying who is coming today.