A management system for managing one or more first terminals, and one or more second terminals, the management system comprising: a storage unit configured to store therein identification information for identifying the first terminal so that a first terminal and a second terminal being specifiable as a destination of the first terminal are in an associated manner; an authenticating unit configured to perform authentication for establishing connection to the management system with identification information of the first terminal or identification information of an administrator; a communicating unit configured to receive, when the authenticating unit performs authentication for establishing connection to the management system with the identification information of the first terminal, from the first terminal a request for registration of the second terminal as a destination of the first terminal and to transmit a request for approval of the registration to the second terminal; and a storage controlling unit configured to store, in the storage unit, identification information for identifying the second terminal as being specifiable as a destination in a manner associated with the identification information for identifying the first terminal, when the connection to the management system is established with the identification information of the first terminal and an approving response to the request for approval is received from the second terminal, characterized in that the communication unit is configured to receive, when the authenticating unit performs authentication for establishing connection to the management system with the identification information of an administrator, from a terminal operated by the administrator, a request for registration of the second terminal as a destination of the first terminal and not to transmit a request for approval of the registration to the second terminal, and the storage controlling unit is configured to store, in the storage unit, identification information for identifying the second terminal as being specifiable as a destination in a manner associated with the identification information for identifying the first terminal, when the connection to the management system is established with the identification information of the terminal operated by the administrator and a request for approval for the registration is not transmitted to the second terminal. a storage unit configured to store therein identification information for identifying the first terminal so that a first terminal and a second terminal being specifiable as a destination of the first terminal are in an associated manner; an authenticating unit configured to perform authentication for establishing connection to the management system with identification information of the first terminal or identification information of an administrator; a communicating unit configured to receive, when the authenticating unit performs authentication for establishing connection to the management system with the identification information of the first terminal, from the first terminal a request for registration of the second terminal as a destination of the first terminal and to transmit a request for approval of the registration to the second terminal; and a storage controlling unit configured to store, in the storage unit, identification information for identifying the second terminal as being specifiable as a destination in a manner associated with the identification information for identifying the first terminal, when the connection to the management system is established with the identification information of the first terminal and an approving response to the request for approval is received from the second terminal,