Margaret Butteriss is a highly accomplished organizational effectiveness, leadership development and human resources professional. She has consulted to leading companies in many industries in the US, Canada, and the UK, both internally as a member of the senior management team, and externally as an independent consultant.
She has held senior HR and management positions at Shell International in London, England, Shell Canada, Ontario Hydro, and Fidelity Investments. She is a Principal of The Convergence Group LLC, consulting and providing executive coaching to senior leaders in the Boston area. She is the author of Re-Inventing HR: Changing Roles to Create the High Performance Organization (Wiley) and Help Wanted: The Complete Guide to Human Resources for Canadian Entrepreneurs (Wiley).

William Roiter, Ed.D., is a Founder and Managing Partner of Executive Performance Group (EPG). He is a psychologist and businessperson who has been consulting to businesses since 1978. He has provided individual consultation to many senior executives and has assisted organizations as they have implemented both planned and sudden changes. His own management experience includes ten years as a managing partner of a professional service firm, three years as Vice President of a publicly-traded company, and three years as Senior VP of a high-technology company.
Bill returned to consultation and coaching in 1996. He provides coaching to senior executives at many Fortune 500 companies, as well as to several start-up and small high-growth companies, and venture capital firms. Bill’s professional training includes a doctoral degree from Boston University and extended post-doctoral training and teaching at Harvard University. He has published two successful multi-media training programs through the Bureau of National Affairs.