The phrase "main playmaker" refers to a person on a team who has the primary role in creating opportunities and making important plays to help their team succeed. Full definition
From the start he progressed rapidly through the club's various youth teams and was promoted to the Barça B team for the 2000 - 01 season, where he almost immediately became the team's main playmaker under coach Josep Maria Gonzalvo. (fcbarcelona.com)
but the key is that he needs to be the main playmaker, so that he can control the pace of the game properly. (justarsenal.com)