Final answer:
A project manager usually leads a team with members from different departments, reflecting the modern move toward flatter organizational structures and collaborative work environments.
Step-by-step explanation:
A project manager often assumes a leadership role that oversees a team of people representing various functional departments. In today's businesses, traditional hierarchical structures are flattening, and even in structured environments, such as bureaucracies with a clear hierarchy of authority, there is a move towards more teamwork and collaboration.
Managers and leaders are expected to engage with team members collegially, acknowledging diverse skills and experiences, and to guide the team's collaborative efforts towards achieving common goals. Different leadership styles, such as authoritarian, laissez-faire, or democratic, may be employed, but increasingly, the emphasis is on group leadership that facilitates communication and team empowerment.