Integral observation and analysis of the fulfilment of a business task ensures a better planning of the whole process and it increases the efficiency of managing these processes. The model of network planning has a considerable advantage over all other methods that analyse the process of the project\u27s realisation as a whole. It ensures a sufficiently clear overview of the fulfilment of the whole task, an unambiguous review of the logic development and the interdependence of the parts of the process. It also provides a more precise and a more accurate setting of the time limits for them and for the whole proces. The concept makes it possible to compare different plan versions with relatively low effort and means, as well as reduce routine jobs by taking into consideration the possibility of using electronic computers. It is, in fact, a model that enables planning, coordination and control of complex processes which require essential time coordination among the large number of partial tasks in order to accomplish the whole business task within a particular time limit and with minimum burdening of the factors included in the realisation of the whole process
