Complex sentence: Stan has compiled a short list of five candidates for Venables to research and is allowed by the "Upper Room" to remain in an advisory role by hanging around as a disembodied voice in Venables' house and car.
Split into simpler sentences: Stan has compiled a short list of five candidates for Venables to research. Stan is allowed by the "Upper Room" to remain in an advisory role by hanging around as a disembodied voice in Venables' house and car.