In a second embodiment, the user interface can be designed in such a way that it generates an actual status request signal in which the query criterion is “all” and transmits this actual status request signal. If the server receives an actual status request signal with the query criterion “all”, the server reads, as part of its actual status routine, all assignments of media IDs to identifiers that belong to a specific user or user group to which the specific user belongs according to the user group table, and generates an actual status signal containing the information read about the assignment of the respective media ID to the respective identifier and sends this actual status signal. The user interface can be configured to perform the generation of the actual status request signal, in which the query criterion is “all”, and transmit this actual status request signal as part of the UI start routine. The user interface can present the user with information contained in the actual status signal about the assignment of the respective media ID to the respective identifier. In addition or alternatively, the user interface can write all information contained in the actual status signal about the assignment of the respective media ID to the respective identifier into a UI allocation table.