When is it your job as project manager to also manage the people who are your team members?

Always-as a project manager, your team members are under your leadership until the projects over. however, in it projects, youre often working with people from other business organizations (at least for part of the time) to help with the project. because these people have a regular supervisor whos responsible for keeping track of their performance and time, youre working in what we called a matrixed environment, using matrix management. you track part of their time and performance, and their regular supervisor does the same. sounds easy, but its very difficult to do in the real world. politics, personality issues, and other elements get in the way.