When a user's permission "Requires approval by assigned management when sending faxes" has been set, all of their faxes will go into the Manager's Pending Approval folder. From there, their assigned manager can approve, or deny a user's fax.
Click on Pending approval in the Folder List. In the detail pane, all pending approval faxes will be listed.
Double-click on the fax message to select it and preview the fax message.
To approval the fax, click on Approve in the toolbar. To deny the fax, click on Deny on the toolbar.