The time commitment on the team manager's part is similar to a soccer or little league coach. The team manager needs the personal skill of being able to let the kids find the solution and not impose the team manager's solution on the team. You'll need to make the commitment clear to parents. Parental support is crucial to the success of the team. Parents must commit to getting their children to scheduled meetings and keeping the child on team and on task if the child wants to drop out.
Teams take time to coalesce and it's crucial that team members attend almost all meetings.
You'll need to train the team managers. Most regions provide team manager training to help start up a team, conduct meetings and prepare for the tournament. Your regional director can help you train team managers. Your prime responsibility will be to see that the team managers are aware of where and when their training sessions will be. You'll need to organize the teams.