from 1994 to 1997, hamula was president of the church's washington d.c. south mission. from 2000 to 2008, hamula was an area seventy in the church's north america southwest area. he became a member of the first quorum of the seventy during the church's april 2008 general conference. after serving first as a counselor in the area, from 2011 to 2014 he served as president of the church's pacific area headquartered in auckland, new zealand.