Please Note - The images used below are demonstrated using Outlook 2013 for PC
1. To share your calender with another Exchange user access the 'Calender' section of Outlook.
2. Select the 'Share Calender' icon on the top tool bar. This will open an 'Invitation Message.
3. Simply add whom you wish to Share the Calender with as a 'To' contact.
4. Next you can change what authority the Recipient can have;
> Availability only
> Limited details
>Full details
5. If required, you can write a message to your invitation prior to sending. To complete the sharing click 'Send'