Every two years is my understanding. It used to be every year. I know from experience that certain individuals, especially those who enjoy continued victimization of their victims, will push for parole hearings as often as they possibly can. I believe the legislation or the rules were changed some years ago to reduce the number of parole hearings or change the time between parole hearings.
In cases we've been involved in, the individual has demanded his hearing and the families have flown in from Red Deer, Alberta, to attend the hearing. Then 20 minutes before the hearing, he says he's changed his mind.