Guide for adding shared mailbox on mac
Instructions
1. From the top menu, select Tools. Select Accounts…

Fig 1. Location of the Tools and Accounts options
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2. The Accounts window will be displayed. Select the Advanced… button.

Fig 2. Location of the Advanced button
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3. Click on the Delegates tab. Beneath the people I am a delegate for section, select on the plus (+) button.

Fig 3. Location of the Delegates tab
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4. Enter the shared mailbox name or email address within the provided search field and select the correct result. Select Add.

Fig 4. Choose a Person search prompt
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5. You may be provided with an auto-discover prompt requesting that you allow the remote server to configure settings within Outlook. Select Allow.

Fig 5. Auto-discover server prompt
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5. The shared mailbox account should now be added to the People I am a delegate for list. Select OK.
6. Your shared mailbox should now be added to your folder list on the left-hand side of your Outlook client. You have now successfully added your shared mailbox.

Fig 6. Shared Mailbox successfully added