Communication Management Method and Communication Management System

A communication management method for managing communication made by a plurality of users with a computer including a processor, the computer being accessible to a storage device holding user management information including information on users participating in a community, group management information including information on groups to which the users belong, and community management information including information on the community, and the communication management method comprising steps of: registering, by the processor, in a case of receiving a request to let a group join a community from a client terminal, an administrative user of the group designated by the request to the user management information; registering, by the processor, the group designated by the request to the group management information; and registering, by the processor, the group designated by the request to the community management information, to allow users belonging to the group to participate in the community.