© 2017 IEEE. This paper presents theoretical implications regarding conceptual leadership in group work that provides the team concept as a centrality of discussion. Work of conceptual leadership is regarded as one of the influence. Experimental workshops were conducted with teams composed of members assigned to follow different communication network structures to simulate various types of interactions. We obtained both qualitative and quantitative data, including records of the conversations during the group work, for analysis. As a result of the analysis, we visualized the influence of a conceptual leadership function that appeared autonomously in a successful team. The conceptual leadership served as the centrality of discussion as a team concept, and influences on the output. The results are useful for building and operating a team in situations where high-quality discussion is required, such as a meeting of project leaders or workshops in higher education.