Step One: Begin by opening Outlook
Step Two: In the bottom left hand side of outlook right click the "Calendar" app
Step Three: Click "Open in New Window"
The Calendar app should now open in a new window.
Step Four: At the top of the screen about halfway over find the "Manage Calendar" tool bar.
Step Five: Click on the "Add Calendar" button.
Step Six: Select the "From Address Book" option. This will cause a new window to open.
Step Seven: Use the search bar at the top of the new window and search for "Car Booking"
A list should appear below with one search result:
Step Eight: Double click the "Car Booking" option from the list. This should make it appear in the box at the bottom of the screen.
Step Nine: Click ok.
The Calendar should now appear as an option you can turn on in the left hand side of the screen.