Cashier on Business Responsive

A cashier will check for new commands and queueing customers more often, and can do short nested interactions without abandoning the job. He can sell an item to a browsing customer, give commands to employees, answer his cellular phone, react to the weather or smells, check out attractive people, close the shop, or automatically sit down to regain comfort.

An owner's family member can take over a cash register that is manned by an employee calmly without route failure feedback.

A patron will call back an idling register clerk and more readily accept being served when in queue position 0.