In 1975, Gough Whitlam's government appointed Edgar to Australian Broadcasting Control Board where she was instrumental in formulating codes for children's television for the first time. She took part in the establishment of the Australian Broadcasting Tribunal's Program Standards for children's television, and was founding director of the Australian Children's Television Foundation (ACTF). Over twenty years, the ACTF won multiple awards including an Emmy, and made co-productions with the BBC, Disney and Revcom. She was executive producer for the 1988 Bicentenary ACTF project "Touch the Sun". She was the producer of the popular television programme Round the Twist