Horizon Media New York promoted HOLLY SOKOLOFF to brand planning director for The History Channel and A&E accounts; LIZZIE BLADES to account supervisor; ANKIT BAJAJ to media planning supervisor; and JENNIFER DILL to junior account executive.

JANE ROOT, president and general manager of Discovery Channel and The Science Channel, is leaving the company and will be replaced by JOHN FORD.

Captivate Network hired ALEXANDRA MUNSTER as director of new business development in Los Angeles.

Ensequence named JULI BLACK director of business development.

mcgarrybowen hired JULIE LEVIN as account managing director to handle the agency's Kraft business. Levin was most recently at BBDO where she was svp, senior account director on the Venus/Gillette Proctor & Gamble account.

JAYME CANGELOSI was promoted to national broadcast buyer, up from assistant media buyer, at RJ Palmer.

DEBORAH KENNEY joined KD&E as a media buyer. She was formerly a junior buyer at Tangible Media.

Forty Forty named MYRNA NEWCOMB as senior designer.

TOM CUNNINGHAM joined Allen & Gerritsen as vice president of business development.

The Maxim Agency added PAMELA HAWTHORNE as managing partner.