How to customise the dashboard?
Accepted answer
Dashboard layout can be reorganized by moving around the different widgets (drag & drop). Also, each widget settings or appearance can be customized using its menu icon (upper left corner of the widget)
Last, but not least, there is an "add widget" icon in the upper right corner of the dashboard. It gives you access to the catalog of widgets to customize the dashboard.
For further information, check the Managing dashboards help.