The members of Zion's Camp are seated separately from the others. Chapter 15 of John is read. Joseph talks about calling of the Twelve. The three witnesses of the Book of Mormon pray, and choose 12 from the members of Zion's Camp: Lyman E. Johnson, Brigham Young, Heber C. Kimball, Orson Hyde, David W. Patten, Luke S. Johnson, William E. McLellin, John F. Boynton, Orson Pratt, William Smith, Thomas B. Marsh, and Parley P. Pratt. Lyman E. Johnson, Brigham Young, and Heber C. Kimball are then set apart by the three witnesses, one witness each setting apart one apostle.
[Conkling, Christopher J., Joseph Smith Chronology]