The Members Group, a CUSO/subsidiary of the Iowa Credit Union League and Iowa League Corporate Central Credit Union, has named Darcy Maynes training specialist. DEI, Inc., a design/build firm, has named Alan Angus, regional sales manager for Maine, New Hampshire and Connecticut; Cindy Compton, administrative assistant; Charles Gray, site manager and Rick Bir, project manager. Carreker Corporation, a technology and consulting solutions provider, has named Nancy Langer executive vice president of its Global Payments Consulting unit. Creditek LLC, a revenue cycle business process outsourcing provider, has named Dolly M. Hightower vice president of marketing.