In his article, the author discusses the administrative structure of the most important offices of the Carniolan Diets. The structure referred to appears in Carniola for the first time in 1519 and became the established norm by 1540. The most important executive bodies of the provincial Diets were the commissioners or (he Verordnete, as they were referred to, of which there were usually from 3 to 6. In addition to these, the Diets also had two advisory bodies: the smaller committee of 12 noblemen, known as the Ausschuss and the greater committee of 25 noblemen which convened occasionally - usually four limes a year, although, in times of emergency, more frequent meetings have been recorded. All four Diet benches (the prelates, the nobility, the knights and the provincial royal towns) were represented in bolh llie smaller and the greater committee - a principle, however, which the diets did not adhere to strictly in appointing their commissioners. The smaller committee was comprised of 4 prelates, 4 noblemen, 3 knights and a representative of the provincial royal towns, while the greater committee was comprised of 5 prelates, 8 noblemen, 9 knights and three representatives of the provincial royal towns. The article also presents the first two instructions given lo the commissioners appointed in 1540 and 1542.