Companies are an important part of the world economy in terms of both trade and employment. Organizational performance is closely related to the performance of human resource management within the company. Employee knowledge and experience is one source of competitive advantage, but it also requires proper HR management policies. Therefore, managers strive to provide the best practice. Especially in terms of paying attention to human resources and striving to make humans as members who contribute effectively to the development plan within the organization which is the responsibility of those working in the field of human resource management (HRM). The study discusses personnel management to HRM and how HRM functions