For websites with gated content and permissions for logged-in users, there can be a benefit for administrators and content authors to 'impersonate' the user on the website. They can experience it exactly as the end-user, aiding support for questions, and troubleshooting when a user reports a problem.
Experience your website exactly as specific end-users, increasing your ability to recreate issues and provide support
Search for a user by various fields including username/email address
Opens new sessioned/cookied window to the front-end of site
Navigate the site as the end-user
Find issues or complete processes for the user