Expiry-day habits: what's on your checklist?

Expiry days can be fast and noisy. Some people don’t trade them at all, while others have strict rules: no new positions after a certain time, smaller size, square off early. What’s on your expiry-day checklist? And what rule did you add after learning the hard way?

For education and discussion only. This is not investment advice.

Physical settlement of stock F&O catches a lot of new traders off guard. Anyone want to explain how it works for the group?

Is your checklist written down somewhere, or in your head?