ERGs can be large global entities with several thousand members and a sizable budget or a local initiative with only several members. They can have a complex governance structure including a President, Vice President, Secretary, Treasurer, Coordinators, different committees, Advisory Board, and Executive sponsors or they can have a leadership team, members, and an executive sponsor. It all depends on the size of the organization, how it operates, the societal context, and what the members and the organization itself need.