Appointment books should use units of 10-, 15-, or 30-minute intervals and can benefit from the 'month-at-a-glance' format.
Units of 10-, 15-, or 30-minute intervals should be used for appointment books to ensure efficient scheduling. The most efficient format is the "month-at-a-glance," allowing a comprehensive view of all days in a month simultaneously. It is crucial to choose a format that suits your preferences and enhances your organization.
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