In this final paper has done the analysis of the process of making a business plan. Also, an example, we have a model of a business plan and a diagram of the activities. A business plan is a document wich contains deeply developed analysis of business investing, analysis of future business results and possible solutions of the high risk situations. The purpose of every business plan is to help it's owners, managers and entrepreneurs to show their vision and to focus on the essential parts of the vision so they can explore current situations and assess opportunities for further development. Business plan also serves to communicate with other investors, business partners, banks, etc. It is very important that business plan gives the most realistic picture of the future of the organization. When creating the diagram of activity, we use swimline techniques, wich visualy differentiate the division of labor and responsibilities for subprocesses. Swimline tehniques can be placed horizontally or vertically and they are different from other diagrams because the processes and also decisions are visually grouped into strips. Parallel lines divide the chart into strips, and every stripe is for one person, group, or subprocess. Stripes are used to show how the chart is organized. It is very important to mention the concept of the business process management, wich represents a systematic approach for business improvement where it is necessary to find the processes that can slow down the business the most.