How do I set a default duration for events in my Microsoft calendar?

1. On the left side Navigation bar of Outlook on the web, click on the Calendar icon.
2. Once the Calendar page has been opened, on the top right side of the Calendar window, click on the Gear icon and then click on Options.
3. In the Options window, scroll down to the Default Event Duration option and select your prefered duration in the drop-down menu.
4. Finally, click on the Save button to confirm the changes.