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***NOTE: This process is only compatible with the old version of Outlook***
1. With Outlook open:
1. Open the Tools menu
2. Select "Accounts"
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2. Select the "Delegation and Sharing" button
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3. Under "My Delegates", select the plus sign [+] button
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4. Search for the mailbox you want to add and click on "Add"
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5. Under the page below, select the properties and access you want the mailbox to have - then, select "OK"
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