The online presence feature allows you to see when others are online. To enable the feature, go to Admin/App center and install "Online presence".
A list of people who are online is displayed in the right bar in the "Online" widget.
Note that the administrator can edit and rearrange the main right bar by clicking the "Edit widgets" button on the admin dashboard. To learn more please visit the Widgets topic.
You can hover over a person to see more information, as well as click the "Message" option to send them a message and the "Chat" option to start an online chat with them.
Who you see online is based on what kind of account you have:
Instructors/Administrators can see their friends, their learners, and other instructors.
Learners can see their friends and their instructors.
Administrators can disable the online presence feature for learners in the Admin/Policies/Learners area under Online.
Instructors can set whether they see their learners online and whether they appear online to their learners by visiting their profile, clicking Privacy, then enable/disable the "See online learners" and "Appear to online learners", respectively.