Redwood Credit Union, Santa Rosa, Calif., has added Kristina Derkos as its new senior vice president of human resources. San Diego Metropolitan Credit Union, San Diego, welcomes John Ash, who was recently hired as the lending manager. Woodstone Credit Union, Federal Way, Wash., has named Scott Butterfield, vice president of sales and business development, a newly created position. Wanda Wigington, chief financial officer, celebrates 20 years of service with Wauna Federal Credit Union, Clatskanie, Ore. Schools Financial Credit Union, Sacramento, Calif., has promoted Joni Scott to vice president of planning and corporate development.