The training of commanders of cadet groups in formation units of educational organisations of the Ministry of Internal Affairs of Russia is one of the most important issues for the successful performing all training and service tasks by the units, but it is still not specified by departmental regulatory acts. When preparing and practicing the training program for junior supervising staff of formation units, the author revealed a number of difficulties, reflected in the lack of a general methodological foundation of training, the lack of basic skills of cadets in group management, differences in the service and civil environments, as well as the personal needs of both individual cadets and all participants of training and service activity. The purpose of the research is to examine problematic issues in the interaction between junior supervising staff and subordinate personnel during the initial phase of training. The methods used are systematic, formal-logical, study of the scientific literature, analysis of regulatory legal acts, private-scientific pedagogical methods. Results. The author has found that the main problem in the group management by junior supervising staff in educational organisations of the Ministry of Internal Affairs of Russia consists in the lack of a general methodological foundation for developing the skills and qualities necessary for effective implementation of service duties, including upbringing and training of personnel, as well as moral and psychological support of the unit’s activities. In addition, the lack of simple and accessible practical materials and undeveloped methods of working with cadet groups has a negative impact on the effectiveness of junior supervising staff training in the law enforcement agencies.