It appears that the time scale options are only available in Day and Work
Week views, not in Week or Month views.

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Jocelyn Fiorello
MVP - Outlook
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> I changed the time scale by right clicking in calendar view, other settings,
> change time in the day view. When I create a new appointment in the month
> view the default time is 30 minutes instead of what I changed it to. When
> creating an appointment in the day view the default time is what I changed it
> to. Why doesn't the changed time appear in the month view?