Hayom Yom: Nissan 14

With regard to selling the chametz it is the custom in the Rebbe's family not to designate the rabbi as an agent (empowered to sell the chametz to the non-Jew) but to sell the chametz outright to the rabbi with an areiv kablan, a third party guarantor.

My father would personally supervise the baking of the sh'mura matza on erev Pesach afternoon. He, too, would recite the hallel, but he would interrupt - even in the middle of a chapter - to give instructions regarding the kneading, baking and so forth.