Virtual human resource management refers to a human resource management method based on cooperative relationships that makes full use of modern information network technology to help enterprises acquire, develop, and plan for intellectual and labor capital. It can meet the requirements of enterprise management virtualization development, and will A large number of human resource management activities are externalized or self-managed by employees, so the company can focus on the core aspects of human resource management and improve the efficiency of human resource management. According to the definition above, Which of the following options are not part of virtual human resource management:. ['An enterprise searches for a product development expert through a headhunting company.', 'A group submits all its ads to the same advertising company.', 'Xiao Li and colleagues were sent by the company to a vocational school for half a year.', 'A company entrusts a labor dispatch company to distribute employee compensation.']