Restoring another files from another users Backup

Thanks foir the advise, but when I login as User 1 and run WD Smartware, select “Retrieve” Tab, and select  the option “To a Retrieved Content Folder”, then I do not get the options to select filess from User 2’s backuo, only those from User 1.  

How do I get to choose which Backuyp I can select to restore files from ?