Head over to the widgets page to view the available widgets. If your widget is not installed yet you will see "Install" button on the bottom of the Manual Page List panel. Click it to install, pls see below.
After installation the button name will change to "Configure". Click on the 'Configure' button for the Manuals List widget to open the sidebar configurator. You will need to be on the Pro plan to use this widget. At the top you will see an area containing a little piece of information letting you know the theme in use for the widget is 2.0 ready and no installation will need to take place.
