When new events are added to your Air calendar, for example if someone books a holiday, it will automatically appear in your preferred calendar app.
Copy your calendar URL
First you have to copy your company's calendar URL:
Go to the Time off app
Select the Calendar tab
Click "Export Calendar"
Copy the link from the text field
Import to Google Calendar
In Google Calendar, click the arrow next to “Other Calendars” in the left-hand column of the page. Select “Add by URL” and paste in your Air Calendar URL.
Import to Apple Calendar on Mac OS X
In Apple Calendar, click File, and select “New Calendar Subscription.” Paste in your Air Calendar URL from step one.
You can then configure calendar settings like auto-refresh interval (how often does it check your Air calendar for changes).
Import to Outlook
Go to Outlook.com and navigate to the calendar section. Choose "Add Calendar" and then "From internet". Paste the Air Calendar URL from step one, give the calendar a name, and then click "Save". More details on Microsoft's support site.