Which of the following outlines user visibility within the software?

User visibility within Workday Adaptive Planning is best outlined by Global User Groups. These groups allow administrators to define who can see and interact with specific data sets, reports, and functionalities within the software. By grouping users based on common roles, responsibilities, or department affiliations, organizations can efficiently manage access levels and ensure that users only see information relevant to their role. Global User Groups streamline the process of visibility management, enabling companies to maintain compliance and security.

While other options may pertain to user access and security management, they don't directly address the overarching framework for visibility as clearly as Global User Groups do. Role Definitions outline the responsibilities and capabilities of users, Access Permissions focus on specific actions users can take, and Security Levels relate more to the hierarchy of access rather than user visibility in a broad sense. Therefore, Global User Groups provide the most comprehensive understanding of how visibility is structured within the software.