I believe your question is referring to how the leader of the team can manage them,if that's the case, encouragement is key to managing a sales team. Encouragement can be in form of incentives, good words of appreciation, and amicably correct the wrong. By doing this you are motivating them to do more and better. Make them feel you trust them and their ability to deliver, bearing this in mind, you have made them feel the sense of responsibility and pressure to do better and never to fall short of expections.