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Granting Full Outlook Calendar Permission to Another:

•   At At the bottom of the outlook screen select calendar view. 
•  At the top of your screen, select calendar permissions. 

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•  On the screen that opens, slick select the name of the person you want to grant permission to.
•  Then, on the right side of the properties box check the "Create Items", "Edit Own", and "Edit All" check boxes. Click "Apply" and "Ok".

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