You can now have Outlook end your events a few minutes early or start them a few minutes late. This can help you build in travel time between events or add buffer time if other events go a bit long. You can choose a different duration for events under one hour and over one hour.
This feature is set up per email account. If you have more than one, be sure to set the start and end time settings for the ones you want.
1. Select File, Options, Calendar, Calendar options.
2. Check the Shorten appointments and meetings checkbox and in the dropdown box choose End early or Start late.
3Use the drop-downs to select the number of minutes for events less than one hour and one hour or longer, then click OK.