Generally, Dashboards are organized in the same way as Data Walls. They are organized first by Scope (Me, School, District), then by folder.
Dashboards can be accessed by navigating to the "Data" shelf in the menu, and then clicking on "Dashboards."
Clicking on the "Dashboards" menu item will reveal a folder browser identical to the Data Walls tool.
To view a dashboard, use the folders to navigate to your board.
Your dashboard will load and display data according to the permissions you have in ion.