Start from the missing contribution
If you need to understand what limits a person’s work, begin with Diagnose Whether a Capability, Misconception, or Behaviour Limits Work (HCD.3). The useful answer may be a justified capability-change target, or a return to a missing tool, explanation, condition or specialist contribution.
If a familiar movement fails because bodily experience, voluntary regulation and the visible action do not yet connect, begin with Model the Bodily Contribution to a Movement (SOM.1). Suitable technique and physical conditions remain necessary.
A known sufficient Method can be used directly. Read its full conditions and cases, including the required teaching competence.