This document provides a facilitator's guide for running a "breaking the rules" session to encourage nurses and midwives to challenge existing rules and ways of working. The guide includes suggestions for preparing for the session, templates for materials, and a slide-by-slide facilitation guide. The session is designed to get participants thinking about rules that inhibit great care and teamwork and generate ideas for rules they would break, challenge, or change. Participants discuss their ideas and categorize them on a poster. They then agree on permissions they will take and next steps in an action plan. The overall aim is to empower nurses and midwives to lead improvements by breaking outdated rules.