Managing Active Users is a feature designed to provide a real-time list of all pages currently being edited, along with the users making updates. It also displays the timestamp of when each user accessed the page.
From the Left Navigation , click on Settings , then Usermanager to access the User Manager Access Control section.
Click on the Active Users tab. You will see all the pages currently being updated.
You are able to delete any of the entries by clicking on the iDelete icon.