Final answer:
The statement is true: the Chief of Staff is the manager of the White House Office, supervising the president's staff within the Executive Office of the President.
Step-by-step explanation:
True, the manager of the White House office is indeed called the Chief of Staff. This role is pivotal within the Executive Office of the President (EOP), with responsibilities that include supervising and heading the White House staff. Since Richard Nixon's presidency in 1969, this position has become a standard part of the administration's organization. The Chief of Staff works closely with other key personnel such as the press secretary, the national security advisor, and directors of various communications and policy areas, demonstrating the complex division of labor within modern administrations. The Executive Office of the President, created by Franklin D. Roosevelt, provides the necessary support for the president to govern effectively.