Marmot will oversee the body's five-year strategy for film, A Bigger Future, a joint initiative with the UK Film Council.
The plans includes a UK-wide network of Skillset Screen Academies and the mentoring scheme Guiding Lights.
Marmot set up Hot Property Films in 1995 where she has produced several features including the critically acclaimed Bodysong.
Iain Smith, chair of the Film Skills Strategy Committee said: "Over the last three years A Bigger Future has introduced a slate of projects to support individuals and companies across the industry. It has gone from strength to strength and will continue to do so now Janine is on board. She brings with her experience and renewed enthusiasm with which to drive the strategy forward to even greater future successes."