How can you determine specific dimension values that are accessible to a user?

To determine the specific dimension values accessible to a user, the most relevant approach is to access the "Access to Coordinate" feature. This tool provides a clear view of the permissions associated with different user roles, including which dimension values they can interact with. It specifically breaks down the access levels for each user regarding various dimensions, making it effective for identifying what a user can see and do within the system.

While other options like reviewing user permissions and user access logs may offer insights into overall user rights and historical accesses, they do not directly focus on the specific dimension values. The "Dimension Overview Tool" might provide information about dimensions in general but doesn’t pin down the exact values available to an individual user. Hence, "Access to Coordinate" is the most direct method to obtain the specific information on dimension values a user can access.