What are the 4 main areas of team intervention?

Excuse me, could you please elaborate on the four main areas of team intervention that you mentioned? I'm interested in understanding how these areas contribute to the overall success and effectiveness of a team. Specifically, I'm curious about the specific strategies and techniques that are employed within each area, and how they can be Leveraged to address various challenges and obstacles that teams may encounter. Could you provide some real-world examples to illustrate your points? Thank you in advance for your insights.