Commodity exchanges are managed on-site according to democratic principles. Traders who trade on the stock exchange and therefore write to the stock market, their professions, ie traded materials, are divided into profession groups according to sex and variety. Occupation committees of 5-11 persons are selected from each group. The board of directors of two or three persons selected from his profession committee is established. The board of directors consists of 5 to 11 members who will elect for 4 years to receive their own members. At the same time, alternate members are elected. Among the members of the board of directors, one chairman and one or two chairman representatives are elected for four years. There is a general secretary appointed by the councils on the Stock Exchange.