Bakers (usually) take small pieces of dough off much bigger dough that they already prepared before starting shaping it in a way they want like spreading or scoring it. I found a picture that might help. In Persian, we call it چانه گرفتن. What's it called in english?
tr.v. shaped, shap·ing, shapes 1. To create or fashion, as: a. To give a particular form to (a material): shape the dough into baguettes.