To realize both of the support of operation space with a sense of presence as if being attended in an office of real world and awareness, and the securing of communication between members and a personal space.

In a virtual three-dimensional space, 'awareness space' is imaged, the volume of this space is decided by the 'concentration degree' of each member and the image of another member corresponding to it and voice information transmitting means area realized to secure both of communication between the members and personal space. In addition, in order to support the transmission of the sign of another member, 'peripheral view' and 'effective sound' are used.