The team is often overlooked when considering the stakeholder community and how to engage them. Downwards stakeholders working on the project (the team) can be staff (employees) or contractors and full time, part time, or for a specified period of time. The team members, whether individuals or groups, may contribute through roles such as planners, technical specialists, business analysts, or team leads. Many perform temporary specialist tasks, joining the project team when their work is scheduled and leaving when it is completed. This affects the dynamics of the team, sometimes disturbing the balance of personalities and roles within the project team and therefore the performance of those who remain. To ensure the best use of these resources, the project manager must understand how to lead and motivate the team when this happens. Leadership is an essential competence, particularly within the environment of the team but also for other areas of stakeholder engagement.