1. Click on the Calendar Icon on the bottom left of your Outlook.


2. Right Click on your Calendar and click Properties...


3. Click on the Permissions Tab on the top followed by Add...


4. Search for the person you would like to add to the Calendar, click on them and then press Add followed by OK.


5. Click on the persons name in the Properties window.

You should be able to select the level of access you would like to give. Editor allows you to add and remove items from your calendar. Press Apply and then OK to save the change. It will take around half an hour to sync over.