Joel and Rose Guemo have been working among the Alta Dumagat people group since 2011. They conduct Bible studies, discipleship, livelihood and leadership training in a local church they have planted among this people. Rose and Joel became full-fledged missionaries of NTMPI since 1994 and 2001 respectively. In her single years, Rose served among the Kankaney people group of Benguet Province for three years. As husband and wife, Joel and Rose served in various people groups over the years. They worked for 10 years in Davao del Norte, reaching the Manobo tribe and other people groups in Mindanao. After this, they served for four years in Zamboanga del Norte and was able to plant a growing local church among the Central Subanen people group.