What does Portal User Visibility control?

The correct choice focuses on the function of Portal User Visibility, which specifically governs whether portal users within the same account can see each other. This setting is essential for maintaining privacy and security among users in a multi-tenant environment, where multiple users may interact but should not necessarily have access to each other's data or activities. By controlling this visibility, organizations can tailor user experiences and protect sensitive information, ensuring that users only see data pertinent to their needs while using the portal.

The other options address different aspects of user permissions and data access that are not directly associated with Portal User Visibility. For instance, editing records and permissions granted to users are broader concerns that fall under general user permissions and roles, rather than specifically about the visibility among users within the same account. Similarly, visibility of records shared with portal users pertains to shared data rather than user-to-user visibility. Understanding this distinction is crucial for effective management of user interactions and data security in the portal.