While the oven is heating, we stretch the pizza dough.
Carefully take each ball of dough, one at a time, dust the table with flour and use your hands to press the ball until it flattens. You don't have to knead it anymore, you just need to press it gently with your fingers and stretch it as evenly as possible.
Make sure you don't incorporate the semolina in the dough, so try to keep it on the outside, this will be the pizza base.