Administrative User Impersonation 
  in SAP BusinessObjects
If you are a BI  platform manager or BI administrator responsible for ensuring the proper  implementation of your organization's security model, or if you're involved in  BI user support, then you'll find administrative user impersonation to be an  extremely useful new feature of APOS Administrator and APOS Security Manager.
 User impersonation  allows administrators to see what specific users see, so you can examine the  implementation of your security model down to row-level security with more  certainty than you can creating temporary accounts. If you are providing BI  user support, user impersonation lets you experience precisely what the user is  seeing while you are talking to them remotely. You can log in to BI Launchpad  as the user and view reports just as that user would see them.
User impersonation can  work with the user providing credentials, or without user credentials if you  activate the SAP BusinessObjects Trusted Authentication feature.