She began her career with Zoetrope Studios, where she was production supervisor of Francis Ford Coppola’s The Outsiders and Rumble Fish.
During her time at Paramount, she was involved in over 20 Paramount classic films such as Forrest Gump which won six Academy Awards including Best Picture; The Hours, which was nominated for nine Oscars; as well as Titanic, The Firm, Nobody’s Fool, Clueless, The Talented Mr. Ripley, Braveheart, and Saving Private Ryan, among many others.
[4] She also executive produced Prosecuting Casey Anthony starring Rob Lowe for Lifetime, as well as both Teen Beach 2 and Adventures In Babysitting for the Disney Channel.
It was the Disney Channel’s first serialized show, its first series centered around an Asian-American family, and its first to feature an LGBTQ character who spoke the words "I'm gay.
[7] In 2019, Manning executive produced Netflix’s The Dirt[8] as well as Come Away,[9] starring Angelina Jolie and David Oyelowo.