Click on the Microsoft Apps Icon on the top-left and select “Calendar”.
For settings click the “Gear Icon” on the top-right.
Click on “Options“.
On the left sidebar menu, click on “Calendar publishing” under the “Shared Calendars” section.
If you don’t have a calendar published yet, click the “Create” button.
You will see two links. Copy the link which finishes with “.ics” and enter it in the screenpublishing Calendar App.