Impersonating a user allows you to view the Z Services Cloud interface with the same permissions as that user. 
This is a useful tool for testing and troubleshooting. To impersonate a user:
1-  Go to 
Anti-Spam Engine > User Policies or 
Anti-Spam Engine > Admins.
2-  Click on the impersonate 

 icon in the Options column on the right of the user you want to impersonate.
 
3-  To stop impersonating and return to your own Z Services Cloud interface, click Stop Impersonating in the top right of the screen.