South Carolina Federal Credit Union, North Charleston, S.C. has named Troy Hall chief operating officer. GTE Federal Credit Union, Tampa, Fla., has named Dr. Zigmund Kryszak senior vice president organizational development. Georgetown Kraft Credit Union, S.C., has promoted Tracy Cameron to head teller and Olivia Williams to technology services manager. In addition, GKCU has named Carrie Johnson teller; Nancy McKnight floater teller; and Gloria Mills collections department clerk.