A terminal being connected in communication with a server, and exchanging information with other terminal, the terminal including a processor, wherein the processor executes: an identification information transmission processing of transmitting identification information of a user's terminal to the server; a grouping authorization information transmission processing of associating the identification information of the user's terminal with identification information of the other terminal on the server, and transmits grouping authorization information for allowing a plurality of terminals to be grouped; and a grouping cancellation processing of constantly providing users with an interface for transmitting cancellation of the association to the server, in a state where the identification information of the user's terminal is associated with the identification information of the other terminal on the server.
