This document discusses high performance teams and how to define roles and responsibilities using RACI charts. It explains that high performance teams require well-defined roles, trust, coordination, communication, efficiency and safety. It then introduces RACI charts as a tool to balance roles and activities. RACI charts assign individuals with responsibilities (R), accountability (A), consultation needed (C), or need only to be informed (I) for each activity. Examples of RACI charts are provided for expense reporting and Lord of the Rings characters. The document concludes with guidance on analyzing RACI charts to ensure roles and activities are properly defined.