In this MatBoss tutorial, learn how to manually set up your roster when not using TrackWrestling. You can access the "Roster" section from your MatBoss dashboard and add wrestlers by clicking the "Add Wrestler" button, entering details such as name, email, level, weight class, and grade. The tutorial emphasizes that manually-added wrestlers can be integrated with the TrackWrestling roster if imported later, providing a seamless integration process for comprehensive roster management within the MatBoss platform.