Planning is the most important function of management. Function that starts the entire management process and function that is a prerequiste of other segments of successful management. Every successful manager tries to incorporate planning into all business processes for better efficiency and optimal business. Planning achieves greater effectiveness and certainly contributes to an easier understanding of business processes. Other management functions are largely related to planning. For example, if there is no adequate plan, there is no point in controlling business processes. The plan is actually a prerequisite for the emergence of a certain decision. Business decision-making is the function of managers, and managers actually try to include other employees in the decision-making process as much as possible. In order to make the most acceptable and effective decision, managers are greatly helped and facilitated by DSS systems when making decisions. The systems strive to provide a sufficient level of information needed by managers when selecting and choosing the most optimal decision.