The executive makeover at NBC under new chief Bob Greenblatt continues. Following the departure of Angela Bromstad last month, NBC’s longtime head of scheduling Mitch Metcalf also is leaving the network effective immediately. The move comes just before the most critical time of the year for broadcast network schedulers as they are assigned with putting together the  networks’ lineups for next season that are presented to advertisers in May.

Metcalf’s No.2, SVP scheduling Lisa Vebber, will now step up and take charge as interim head of scheduling presumably at least through the upfronts.

Metcalf has been at NBC since 1999, serving as EVP of programming planning and scheduling since 2005. In 2007, he took back seat for a year or so when former NBC marketing guru Vince Manze was given the reins of the network’s scheduling department. He is credited with successfully launching Deal or No Deal as a strip and moving Law & Order: SVU from Fridays to Tuesdays. Metcalf recently had to oversee the complete overhaul of NBC’s schedule as it went from 3 to 2 hours of programming a night Monday through Friday to make room for the ill-fated Jay Leno Show.