Sub-project Z is concerned with the control and monitoring of centrally administered funds of the CRC 1683. This includes funds for guests, travel, national and international conferences and workshops, student assistants, public relations, equal opportunity measures, administration and the lump sum funds. In addition, sub-project Z is re-sponsible for the realisation of a scientific and a public demonstrator and coordinates the planning, construction, operation and participation of the sub-projects in these demonstrators.