How do I make an absences attachment category confidential so that the manager cannot see any attachments when the employee submits their absence request?

Systems Administrators can configure absence categories and decide whether any attachments in that category are to be treated as confidential (meaning they cannot be seen by the manager or shared approver). Go to Administration > Absences > Attachment Categories > Click on the pencil icon > Click on "Yes" underneath the field "Confidential”.