If you have administrative privileges, you can use the Show Documents for All Approvers option to view all items in an approval queue.
This option is only available if the current user has Workflow Administrative Processing privileges, or if the current user has the “See Other User's Documents” privilege configured for the queue.
To display all items in an approval queue, right-click an approval queue and select Show Documents for All Approvers. The queue count is updated to reflect the total number of items in the approval queue, and all items are displayed in the Document window.
To turn off the Show Documents for All Approvers option, right-click the queue and deselect Show Documents for All Approvers. Navigating to a different queue also turns this option off.