The dashboard is part of the following article Credential Tiering - The Value of Containment Part 2 and requires a BloodHound FOSS or BloodHound CE dataset.
To use the dashboard, get the NeoDash application and import the dashboard Tier0HoundDashboard.json. NeoDash can be downloaded through the Neo4j Desktop application from the graph app gallery or directly from GitHub. NeoDash works also with the Neo4j Community Edition.