One-time processes that we call projects have a special role in the survival and development of a society. The basic characteristic of these processes is that, after their ultimate goal has been determined and their implementation leads to their achievement, they cease to exist. Objectives of one-time processes are especially important and they usually serve to achieve something entirely new that did not exist before. The greatest human achievements have been accomplished by using these one-time processes projects, regardless of which human activity they are related to (flight to the moon - the Apollo project, the tunnel under the Mont Blanc, etc.). An investment project is a set of very complex activities and procedures in which, although all segments are taken into account, undesirable and unpredictable situations can always occur. In each project, no matter how similar or even identical to the previous one it may seem, attention should be devoted to the smallest of details to reduce the risks to the lowest possible level. Disregard could prove fatal for a company or organisation, and in case of a large project, it could lead to bankruptcy and liquidation of companies. A project is, in fact, a unique process, at least with the set object of the project, so the organisation must adapt to projects that are very different in terms of object, duration, ultimate goals, purpose, environment in which they appear, complexity in terms of costs, investments, etc. This is evident when projects related to new products are compared, projects of building an electric power plant, overhaul projects, and other.