They set aside the burnt offerings to give them to the laypeople according to their family divisions. The laypeople could then present them to the Lord as written in the Book of Moses. The Levites did the same with the bulls.
“If you bring a burnt offering from your cattle, you must offer a male that has no defects. Offer it at the entrance to the tent of meeting so that the Lord will accept you.
Slaughter an animal from your flock or herd as the Passover sacrifice to the Lord your God. Do this at the place where the Lord will choose for his name to live.