View calendar shared outside organization The calendar will appear in your Outlook under Shared Calendars: Simply open the sharing invitation that your colleague sent to you and click the Accept button at the top. When a calendar is shared within the same organization, it can be added to Outlook with a single click. If you are using Outlook on the web (OWA) or, the detailed instructions are here: How to open a shared calendar in Outlook Online.
This tutorial focuses on the desktop Outlook app installed locally on your computer.
