As manager, it requires keeping the team together and the communication lines open. It also expects a good knowledge of the individuals who make up your team and the roles they play. Everyone in the team needs be working to keep operations running smoothly. Teamwork is not about getting people together and dictating to them you order, but rather about developing a commitment to the goals by establishing trust and cohesion.
Effective teamwork requires that all team members correspond well to each other and as a manager you need to be familiar with the resemblance as well as the differences in the individuals who make up your team. The main challenge is to respect those differences in personality and to work with these to be certain that the team does not have any conflicts.