A Member or player, depending on your terminology, is the unique entity according to which scoring events are grouped. A Member must exist in the system to be included in Competitions, Contests and Achievements. The Members section of CompetitionLabs lets you add, edit, remove and send messages to Members.
In the Members → Members List (see example below) you can create members, upload a batch of members, search for them by categories, edit them, or delete them.
The buttons used in the Members List section are:
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Edit – lets you edit a Member. 
Remove – lets you delete the Member.-
Add Member – lets you create a New Member. 
Update from CSV – lets you upload a batch of members from a CSV file.