It is also important to ensure a group doesn't have a scope definition that is shared across multiple groups. Here are two examples:

Organizational Structure

We believe everyone deserves to report to exactly one person that knows and understands what you do day to day. The benefit of having a technically competent manager is easily the largest positive influence on a typical worker’s level of job satisfaction. We have a simple functional hierarchy, everyone has one manager that is experienced in their subject matter.

We don't want a matrix organization where you work with a lead day to day but formally report to someone else.