The CommonKADS methodology is a collection of generic methods for designing knowledge based systems. The focus of CommonKADS methodology during the design process of knowledge based systems is on activities, therefore the basics of these methods is the construction of a large number of models which provide different views on the behaviour directed at problem solving. The aim oft he thesis project is to design and implement a concept of a system for managing records of borrowing or returning keys (sessions) form the premises of educational institutions, specifically applicable at the Faculty of Science in Split.