What is the Leaderboard?
The leaderboard is where you can go to view how other users within your org are doing.
The leader board is organized by Teams, Users, Sequences, and Templates and can be categorized so that the rankings are based on Deliveries, Open rates, Click Rates, and Reply Rates, Bounces, and the number of Unsubscribes.
You can view more details by clicking into the portion of the leaderboard you are interested in. For example, if there was a user you wanted to see in detail, clicking the user's name will pull up a report of that user:
Where is the Leaderboard?
The leaderboard can be found in the Reports tab: