Set a Delegate
Click File in Outlook
Select Account Settings and Delegate Access
Select Add
Find the user or users, you need to grant access to, highlight and click Add and OK
You will now get ‘The delegate has the following permissions’
Select which permission you need to give the user or users (Calendar, Tasks, Inbox, Contacts and Notes) Select from Editor, Author and Reviewer - If none are required, use the dropdown and select None
Finally, press OK and OK again
Opening a Delegated Mailbox
Click File, Open & Export, Other User’s Folder in Outlook
Enter the users' name or click Name and select from the address list and press OK
Select the Folder Type which has been shared e.g. calendar and press OK.
You will now see the shared resource