Open Call for Volunteers! Addiction Prevention Competence Centre is inviting young people aged 20 to 30 to volunteer in the mentoring programme Older Brother, Older Sister — a programme that changes the lives of children, as well as the lives of its volunteers. Older Brother, Older Sister is a long-standing mentoring programme that connects volunteers with children at risk of experiencing challenges while growing up, aged 6 to 14, with the aim of providing: Through regular time spent together, the child has the opportunity to develop a sense of belonging,