The Shaare Rahamim Haggada

Chapter 21: Yahatz

The Syrian custom is that before the leader of the Seder breaks the matzah he tells his family the story of everything that happened in Mitzrayim until the splitting of the ים סוף.
As he tells them about the ים סוף splitting, the leader takes the middle of the 3 matzot before him and breaks it in half. The smaller half is replaced between the two whole matzot and the larger half is used for the Afikoman. The Afikoman is given to one of those assembled for safekeeping. It is customary to give it to one of the children. 

The Syrian Tradition is to break the middle matzah into the shape of the letter " ו "  (Vav, the bigger half) and " ד " Daled, the smaller half).  He divides it by hand and not with a utensil.

If one matzah is already broken, it should be used for this purpose. 

Before giving the Afikoman to one of the children, it is customary to first wrap it in a cloth, place it on his shoulder and recite ‘משארתם צררת וכו׳

The wrapped Afikoman is then passed around to all those assembled who likewise place it on their shoulder and recite the following: