Broadly speaking the intervention in the opening 2 sessions is directed at achieving the following tasks: Check the box when done: 1. [_] - Introductions and Engagement, if this is not already in place. 2. [_] - Clarifying SUD-Rx - Who should be present at sessions? 3. [_] - Discussion/reminders of Confidentiality, if this has not already been covered. 4. [_] - Clarifying the nature of the challenge via Assessment for SUD-Rx. 5. [_] - Completing the Baseline Outcomes Measures