Player nicknames are a way for users to customize the names of the players they own.
Many users utilize this feature to give players funny names and others use it for a note or salary of that player.
On the Mobile App
Go to your league's settings page
Go to the "My Team" section
Here you can enter nicknames or select the pencil icon on a player's picture and set a custom player photo
On the Web App
Go to your specific league
Go to the Team tab
Click on the settings icon to the right of your team name
