Only users with the role InsightModelCreator/InsightExecutive/InsightAdmin can edit/update custom dashboards.
When you try to edit a dashboard, all the fields are populated with the current values. You can change any of the fields if required.
To edit a custom dashboard:
Click the model for which you want to monitor the performance on the Consoles page.
Click My Custom Dashboards icon.
Click the Edit icon (the pencil icon) on the Custom Dashboard tile.
The Create Dashboard dialog opens.
Make the required changes and click Ok. Click Cancel to discard your changes.
You can see the changes you have made.
Click the Delete icon on the Custom Dashboard tile if you want to delete the custom dashboard for any reason.