The IBKF is the directory board for any matter concerning Lake Constance fishery. The board meets once a year, whereas the boards chairman changes every three years on a rotational basis. Resolutions on fishery regulations must be decided unanimously to make sure the interests of all contracting states are respected. Resolutions made by the IBKF must be implemented in national law. The decisions of the IBKF are assembled in the assemblage of resolutions.