Project Support is a theory-driven, empirically based parenting intervention that reduces conduct problems of school-aged children exposed to frequent and severe family violence. It also increases the quality of the parent-child relationship by improving caregivers’ parenting skills. In addition to general clinical skills, such as effectively establishing and maintaining the therapeutic alliance, several specific competencies are required to administer Project Support. Clinicians need to understand theory and research on how exposure to violence can impact parenting and child behaviour, as well as the proposed mechanisms and theory behind behavioural interventions. This background knowledge helps inform specific competencies for Project Support, such as how to tailor the program to individual families and how to teach and execute the parenting skills properly. Clinicians also need to flexibly respond to changing family circumstances and address challenges to optimal treatment such as emerging crises, significant parental psychopathology or potential ongoing contact with a violent partner. This chapter summarizes the core competencies necessary for delivering Project Support and provides an illustrative case example.