To edit any of the Card or Graph widgets, click on the 3 vertical dots and then "Edit."
This will open a new window to modify the widget title, add or remove actions, and Update.
The graphs work much the same way. Click on the 3 vertical dots, click on Edit.
A new window opens with options to modify the widget title, select metric data, a time frame, and Save.
Any widget may be deleted. If you delete a widget, you will have to recreate the widget to add it back.
Re-Sort widgets by clicking and holding the mouse pointer on the widget title to drag and drop the widget to a new place.
A new window will open to select desired widget.
Each widget type has different selections to make. Give the widget a title, make selections, and click the "Create" button when finished.