Successful business of an organization is a responsibility of management, which to follow the market trends has to satisfy the needs of its environment. An important factor of successful management is to follow and respond to basic principles of business, and with that management functions contribute general improvement of a company. Management functions are directions to managers on how to run a business organizations. Management is a complex process of activity in company business, which envelops a whole list of skills and knowledge to achieve the planned goals. Planning is the initial management function in which a complex system of levels is related to management levels. Planning is a complex process of the future state of affairs of a business. Organization is a management function in which process of organization is combined with organization strategy. Staffing as a management function is a complex group of activities to manage human resources. Management function of leading is a group of activities directed at the relationship between manager and employee. Leading is a process, or a skill of an individual to influence people who will with their work and actions progress to achieving the business goals. Control is a management function that manages a business result through a set of measures and activities. The HEP Group is a large company that consists of several operation-distribution companies. HEP-ODS is an operationdistribution system that is responsible for the quality of distributed electrical energy to its customers. HEP - ODS is engaged in the management, maintenance, construction and development of the distribution network. The application of the management function is shown in the example of HEP - ODS Zabok, that is how HEP - ODS Zabok uses functions in its business. HEP - ODS Zabok adheres to the management function in its business, and adapts to the rules of higher levels of management. The application of the management function is shown in the example of HEP - ODS Zabok, that is how HEP - ODS Zabok uses functions in their business.