How to configure any of the widgets?
Go to the 'Dashboards & Reports' page from the left navigation panel.
Either click on 'Create Dashboard' button to add a new widget.
Or click on any existing dashboard from the dashboard listing page. You are now in the 'View Mode' of the dashboard. Click on 'Edit Mode', a pencil icon present in the top-right panel. Then, click on 'ADD WIDGET' button.
You will be directed to choose a widget from an array of widgets.