This guide is an in depth look at how checklists work within the event industry in terms of sustainability. Checklists can be difficult to create as every event is different and unique to the circumstances it is held in. This guide will help you to create your own checklist by looking at the different areas necessary to tailor your checklist to your organisation and event. This guide provides the questions you need to ask yourself in order to establish what’s important to you in terms of identifying your scope and your issues. If you’re looking to get organised and start implementing ISO 20121, this guide can help.