Add the App to your site, using SharePoint menu.

Grant the App read permissions to the site.

Open the App configuration page.

Select the preview tile.
This will display a demo list on the App Part. The list can be scrolled. Until the end of the list

Select Edit from the App Part to view example configuration options

Navigate to you site, and edit a page. Add the App part and save the page.

If your user account has permissions, Edit the App Part placement for the Edit link to appear. Select Edit on the App Part.
Configure the placement settings for the App. Multiple placements can be used in the same site.

Using site settings, delete the App.