Abstract
Recent urban life of people requires IT based communication fortheir community construction. An information system for large-scale apartment residences has been designed. The system consists of "recording and editing" the group activities and "publishing" the drawings. GUI design, activities of user groups,and a theory for the design are discussed in this paper. "Doughnuts form" of layout that allows presentational mode of contents is developed. Three concepts, visualizing group activities, publishing multiple group activities in real time situation, and enabling potential participants to join into one of the activities are configured the layout.
