RecruitingBehavioural interventionTesting Implementation Strategies to Scale-up a Multicomponent Continuum of Service Intervention for Families Involved in Systems With Parental Opioid and Methamphetamine UseThis study will explore how to expand the Just Care for Families (JCFF) program beyond its current sites in Oregon, while addressing two main challenges: the developer team cannot provide ongoing support to every new program, and rural counties face limits on caseloads and reimbursement because of long travel distances. To overcome these barriers, the trial will test two strategies-using a JCFF mobile app to improve outcomes and efficiency, and relying on trained Experts (instead of the developer team) to guide new counties. With five active counties and four new ones, researchers will study whether parents receiving JCFF with digital support show reduced opioid and stimulant use, better child welfare outcomes like reunification, and more efficient treatment. This study will also compare how well new counties implement JCFF compared to existing ones, and use modeling to see if digital tools help programs sustain themselves by balancing caseloads and reimbursement. This study is supported by and included in the Helping to End Addiction Long-term Initiative (https://heal.nih.gov/).