You tried going to https://nums.rs/wp-content/uploads/2014/12/Pravilnik-o-bli%C5%BEim-uslovima-i-postupku-za-izdavanje-dozvole-za-sprovodjenje-osnovne-i-specijalizovane-obuke-posrednika.pdf
, and it doesn't exist. All is not lost! You can search for what you're looking for.