• Select a meat type: wait until it is loaded - check statusbar! (1);
  • select the Phosphor:Calcium ratio of your liking (2);
  • type in the Calcium and Phosphor content of your vitamin/mineral supplement (3);
  • type in the amount of meat in grams (4);
  • push the "calc" button in the adjacent frame...
  • ...and let this program do the rest...