Sarah Grey -- formerly a broadcast producer at Ogilvy & Mather/New York, where she produced Miller Lite's recent "Cat Fight" spot -- will join New York production and design firm Brand New School as East Coast executive producer on March 1. ... Sascha Flick, formerly a producer at Radium/San Francisco, has been named senior producer at Radium/Los Angeles. ... Ekta Aggarwal, formerly of Mad Dogs and Englishmen, has joined New York's Platinum Design as director of marketing. ... Candyce Ayn-Lund, formerly of Click 3x/Atlanta, has joined Atlanta animation house Dagnabit! as as director of business development.