Shared Mailbox creation: This simple guide shows you how to create a shared mailbox in exchange 2013.
In the EAC Click on Recipients -> Shared
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- Click on the + button.
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- Enter in the Display Name and Alias.
- Click browse to select an OU.
- Click on the + button to grant Send As Permissions.
- If you click the More Options button you can set the Mailbox Database where this mailbox should be housed.
- You can also select a policy.
- Once done click Save.
Hope it helps.