Public folders can also be added to Virto Calendar as a data source. If you’re using public folders (created in Exchange admin center), you can overlay them in Virto calendar.
First, click the “Edit calendar” icon.
Scroll down to “Exchange settings” and check the box “Display events from Public Folders Calendar(s).”
Public folder settings
When you save and open the calendar, added public folders will appear in your calendar.
Public folders in the calendar view