For the source text click/tap here: Menachot 56
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Se'irei Avodah Zarah require Semichah. The Se'irei Chatas of the Nesi'im did not require Semichah, according to Rebbi Shimon.
According to Rebbi Yehudah, the Se'irei Chatas of the Nesi'im also required Semichah.
The blood of a Korban Chatas must be received in the north of the Azarah by a Kohen who is also standing in the north. However, if the one who slaughters the Korban Chatas is not standing in the north, the Korban is valid.
The Shechitah and the Kabalas ha'Dam of an Olas ha'Of may be done in the south of the Azarah.
The Shechitah and the Kabalas ha'Dam of a Korban Pesach may be done in the south of the Azarah.
The altar of burnt offering was substantial in size; northern slaughter required that the animal be positioned north of the altar's midpoint, but the priest might be positioned to the east, west, or south while reaching across to slaughter the animal to the north. The question of whether the priest's body must also be in the northern zone, or whether only the animal must be, is a question of considerable practical consequence in a system where even minor ritual errors could invalidate an offering.