Relational Dashboard is a feature that provides the end-user with an easy navigation to the next relevant dashboard, continuing with the same set of parameters as the board he was already using.
Whenever a widget has an object link or the icon present, the Related dashboards popup menu is available on left-mouse-click.
Example: Click thumbnail to view image/gif in full size.
After this, simply click and and the named dashboard will open in a new tab.
Setup
You can only do this if you're a PerformanceGuard administrator.
Navigate to Administration > Dashboards > Relations or on the popup menu click the then for each of the object types below setup which Dashboard to link to.