After enabling this integration, you can connect your Favro account with your calendar. Start & due dates appear from Favro appear in your Outlook Calendar.
After enabling the integration click on your avatar in the top right corner, go to Edit profile and Calendars.
By pressing Connect to Microsoft Calendar a new tab will open where you will have to log in to your Microsoft Account.
Give Favro permission to your Outlook Calendar.
Back under Edit profile and Calendars you can now choose which calendar you like to sync.
Now set Start & Due date on a card in Favro.
Open your Outlook Calendar and you'll see the event.