The current "Manage Dashboard" dialog is functional, however if you have access to a large number of dashboards, it becomes difficult to manage having to slowly scroll through a long list to make sure you don't miss the dashboard you're looking for if you want to add a sub-Dashboard.

I think there are 2 aspects of this dialog that could be separated to provide better functionality.

Adding a Sub-Dashboard/Editing Dashboard Name:

• Search functionality to find the dashboard you're after
  • This then filters the list to that dashboard with the same arrows to collapse/expand that dashboard tree
  • Either add a sub-Dashboard or edit Dashboard name should then be available

Re-ordering Dasboards/sub-Dashboards:

• Whilst Drag-and-Drop functionality is simple and intuitive for an end-user, when the list of dashboards becomes too long it doesn't work as well; especially inside a smallish pop-up dialog
• As much as I don't like to compliment Microsoft, the method for managing columns in SharePoint list views works quite well by using check-boxes to hide/un-hide and a number drop-down to adjust the position in the ordering.
• Even if the method isn't changed from the drag-and-drop, the dashboard re-ordering should be accessed via a dedicated page within the user's profile settings.

The Manage Dashboards link could be broken into 2 buttons

• "Edit Dashboards": brings up the dialog with search
• "Arrange Dashboards": links directly into the page within the user profile settings