Morrison will be a consultant while Warren will be penning a song for the project, which will be helmed by Amy Ziering and Kirby Dick, reported Variety.
Morrison, 39, is the first woman cinematographer to be ever nominated for an Academy Award for her work on the film "Mudbound". Warren, who has been nominated for Oscars nine times, bagged another nod with rapper Common this year for "Stand Up For Something" from "Marshall".
The documentary was announced in October after the Harvey Weinstein scandal broke in Hollywood and opened floodgates of similar sexual harassment and sexual assault revelations in the industry.
"As a huge fan of their work, I'm looking forward to teaming with Amy and Kirby again on another game-changing film," said Warren.