The ceremony of Olofin is one of the highest ceremonies that a Babalawo can receive. It is generally received by Babalawos of the highest hierarchy. It´s a short ceremony that lasts one day. One of the most concerning things about this ceremony is that many Babalawos say they have Olofin when they really don´t. Then they give Olofin to other Babalawos hurting them by doing so. These Babalawos, not knowing that they don´t have Olofin, also give Olofin, generating a chain of Babalawos that think thay have Olofin. This is why I personally recommend to study the family´s genealogy to make sure that the Olofin you receive is good.