Start by placing your baking steel in the oven. Set the oven to 300 degrees Celsius (572 degrees Fahrenheit) and activate the grill function. Put tipo 00 flour, wheat flour, baking powder, and salt in a bowl and mix them together. I use my mixer. Put water and oil in a new bowl and mix them together. Gradually pour the oil/water mixture into the mixing bowl with the dry ingredients and let it blend well. Then knead the dough thoroughly. When the dough is smooth and pulls away from the sides of the bowl, sprinkle flour on the kitchen counter and turn the dough out onto it. Roll the dough out thin. Since I made three pizzas, I first divided the dough into three parts and then rolled them out separately. Place a piece of baking paper on the counter and place the dough on it. If you are baking multiple pizzas, each pizza should have its own piece of baking paper.