Hey there :)
For the leadership PEI, the key is to go very concrete: pick one strong story where you actually led others through resistance or ambiguity, not just where you were a high performer yourself. McKinsey wants to see how you set direction, motivated people, resolved conflicts, and drove impact. Structure it clearly (context → challenge → your actions → measurable outcome), and emphasize your thought process as well as how others responded to you. Depth matters more than breadth, so stick to one story and go into detail.
If you’d like, feel free to reach out and I can help you sharpen your story and practice delivery.
best,
Alessa :)