The MEG Operator Guidelines are designed to be a comprehensive guide to operating the MEG scanner. The Introduction defines the rules of practice in the MEG scan suite, the roles and responsibilities of operators, and advice on participant handling. There then follows specific guidelines for the pre-scan set up period and then a comprehensive guide to the scanning process. In the appendicies are extra information needed for non-typical scan setups and a troubleshooting guide, should you have a problem and need quick specific advice.