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This Innovative Practice Full Paper addresses modern cyber ranges which represent unified platforms that offer efficient organization of complex hands-on exercises where participants can train their cybersecurity skills. However, the functionality targets mostly learners who are the primary users. Support of organizers performing analytic and evaluation tasks is weak and ad-hoc. It makes harder to improve the quality of an exercise, particularly its impact on learners. In this paper, we present an application of a well-structured visual analytics process to the organization of cyber exercises. We illustrate that the classification derived from the adoption of the visual analytics process helps to clarify and formalize analytical tasks of educators and enables their systematic support in cyber ranges. We demonstrate an application of our approach on a particular series of eight exercises we have organized in last three years. We believe the presented approach is beneficial for anyone involved in preparation and execution of any complex exercise.