Click on "Team Settings" → "Chatter Metrics" on the sidebar to see a list of all chatters.
Important Note
If you don't have any chatters, just add all of your chatters to the team and once they log in through their account, their data will be tracked.
Now you will see lots of data, including their online time, revenue, sent messages, and more.
With the date picker, you can see the data within any timeframe you want to analyze.
