Cleaning and inspection tasks are carried out. If there is a task in [2. Clean up] or [3. Inspect room], a person who can deal with it will respond. While waiting time was tolerated under the division of labor system, productivity improvement is achieved through multi-functionalization of employees.https://support.questetra.com/templates/human-multitasking-workflow-20180101/2019 (CC BY-SA 4.0) Questetra, Inc.