Editors of the Joseph Smith Papers Project mention the "quorum of anointing" in Documents volume 14.
Alex D. Smith et al., eds., "Volume 14 Introduction: Joseph Smith Documents from 1 January through 15 May 1844," in The Joseph Smith Papers, Documents, Volume 14: 1 January–15 May 1844 (Salt Lake City: Church Historian's Press, 2023), xxiv
Only days after the city council investigation at which Higbee testified, Smith approached Law and informed him that he had been removed from the First Presidency and the “quorum of anointing”—a prayer group that participated in sacred ordinances.