This paper describes the reasons and methods of implementing the project of digitization of business processes related to the rental of business premises and the organization of events. Insight into the existing processes identified shortcomings that have become functional requirements in the digitization process. The remaining functional requirements were collected in conversations with stakeholders in business processes. After an overview of the current situation and after the collection of functional requirements, the process of selecting the system in which the digitization project will be implemented began. The most important criteria in the selection process were price and ease of use. Among the available systems, the Redmine system was selected. In addition to being able to meet all functional requirements, the system is designed as an open source solution, and has already been implemented in some other business processes in the company. In addition to the basic Redmine system, its various plugins are described, as well as the way in which various functional requirements have been realized with their help.