To have access to this feature, you need to already be in a Team.
 
Team Leagues is a brand new feature that will run along side the 7 Day Team Challenge. Team Leagues is all about STATUS: you want your Team to be in the highest league and show off your Team League Shield!

The aim of the Team Leagues feature is to complete Daily Team League Missions in your Team and work your way up the Team League Shields. By completing the Daily Team League Missions, you will receive Team League Points that will promote your Team to higher leagues AND give you Team Points for the 7 Day Team Challenge.
 

Team League Shields

Team League Shields represent the level and status of the Team League. Team League Shields will be visible on your profile and when you are playing at a table. There are 9 Team Leagues:

Fish I, II, III, IV, V
Shark I, II, III, IV, V
Highroller I, II, III, IV, V
Winner I, II, III, IV, V
Pro I, II, III, IV, V
Champ I, II, III, IV, V
Master I, II, III, IV, V
Grandmaster I, II, III, IV, V
Legend

Each of these Team League Shields, except for Legend, are divided into 5 Tiers (that will appear as Roman Numerals). As you progress through each Team League Shield, you must complete each Tier within that Team League. For example, as you begin Team Leagues, you start in the Fish Team League. In order to promote your Team to the Shark Team League, you must complete all 5 Tiers within the Fish Team League.

To access Team League information, there are two tabs next to the current Teams tab: the Team Leagues tab where you can view your current Team League Shield, Team League progress, and the Daily Team League Missions, and the Overview tab where you can view all the Team League Shields and how many Team League points are needed to reach each one.
 

Legend Team League

The highest status in Team Leagues is the Legend Team League. This league has not been divided into 5 Tiers like the rest of the Team Leagues. This is because you cannot go further than this Team League. The aim is to stay at the Legend Team League at all times. To do this, you must continually fill your Team League progress bar at the Legend status.
 

Daily Team League Missions

The Daily Team League Missions are the key to promoting your Team League Status! This process works similarly to the current Daily Activities and Chests in the Team Challenge. The Daily Team League Missions will reset each day and they must be completed and claimed before the day is over. (every day, 9PM CET)

By completing these Daily Missions, you will receive Team League Points that will boost your Team League progress bar. As you work your way through the Team League progress bar, you will be able to promote your Team League to next highest Team League Tier or Shield.

You will also receive Team Points in the Daily Team League Missions for the Team Challenge.
 

Team League Checkpoints

Along the Team League progress bar, there are also Checkpoints. Whilst it is important to fill your progress bar with Team League Points, you must hit the Checkpoint in the progress bar within the time of the Team Challenge.

If your Team does not reach the Checkpoint in the progress bar within this time cycle (every Wednesday, 9PM CET), your progress will be reset and you will have to restart. If your Team's progress has reached the Checkpoint, this progress will be saved and you can continue from this point in the following Team Challenge.