Initial Dropbox is set up is documented in the Admin Guide, linked below.
Enabling the the Admin Quarantine feature, however, requires an extra step. To enable the Admin Quarantine feature for Dropbox, an email alias needs to be added to the "Account for Admin Quarantine" field. In the Aperture Portal click Settings tab > Cloud Apps & Scan Settings > click on Dropbox cloud app name > enter the desired Admin account email in the "Account for Admin Quarantine".
This will ensure that files meant for Admin Quarantine will be moved to the specified admin. If no Admin is specified, the Admin Quarantine feature will not work.
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