In a Documents list, an FYI administrator can view the contents of all users' In Trays by including the Filing Status column and then filtering this to show only documents with the Filing Status of "Draft". Only an FYI administrator will see emails and documents that are in other peoples In Trays.
You can additionally add the column Owner and then filter for one or more users to display the contents of a specific user's In Tray. This can be used, for example, if a user is getting behind, or if a user does not have access to a cabinet.
It can also be used if a user has left and is now "Inactive". If the user has already been set as "Inactive", you cannot select the user name as a filter in the Owner column, but you can sort the Owner column to group the documents together by user.
This can also be useful if you need to access an email or document that a user cannot access in their In Tray for one of various reasons (refer to Error "You do not have access to this document" or "This document is saved to a secure cabinet or secure client" when filing an email or document).