Abstract: An arrangement is provided in a milking system for simultaneous milking of animals comprising milking positions (P1-P24), each of which being provided with teat cups, which are attached to the teats of an animal and are connected to a source of vacuum to milk the animal. The arrangement comprises a processing device (10) for gathering and processing information of the milking of the animals, and terminal units (13) arranged at the milking positions and connected to the processing device (10). The processing device is provided for (i) receiving a user identity; (ii) retrieving a user specific setting based on the received user identity, said user specific setting defining user specific information of the milking of the animals; and (iii) transmitting information of the milking of the animals to the terminal units defined by the retrieved user specific setting. The terminal units output automatically the information received from the processing device.