The View User tool is located in Admin Tools and allows admins to view the web portal from the perspective of a specific user. This can be helpful to ensure that a user has access to the tools they need, or as a way to support individual users. Any changes that are made are logged as if the user were making the changes, but it will also list the admin user in the change log.
To cancel view user, return to the Admin Tools, or press the crossed out eye at the bottom of the main menu on the left.