Leaders need to be forever prepared to get reviews based on the performance of the team. Thus mentorship and constant motivation is a tool to get best performances out of team members. Product managers must understand that constant feedback is necessary as this also allows engagement with colleagues. Redundancies can then immediately be weeded out. Leaders must stay away from office politics, communicate clearly, reduce ambiguities and provide support to the staff members. Even without actual authority, control can be maintained as long everyone understands his / her role within the broader scope. Good talent management involves separating out the differences that co-workers have to instead develop a cohesive unit. Some degree of conflict is good as it shows difference in opinion that can be leveraged to enhance creativity.

 http://innovationexcellence.com/blog/2016/10/02/leading-and-managing-product-and-innovation-teams/