You can add an app to a SharePoint Site App Catalog. This way, editors can then add it to the pages on the site.

You can add one of the following:

• Staffbase 365 News Central
• PnP Modern Search Extensibility Library

Prerequisites:

• You have the role of SharePoint Site Owner or Site Collection Admin and can add an app to the SharePoint Online Site. 
• You have already installed the app that you want to add to the App Catalog. For example, Staffbase 365 News Central or Staffbase PnP Modern Search Extensibility Library.

1. Navigate to the SharePoint Site to which you want to add Staffbase 365 News Central.
2. Click + New and select App.
   
   
   
   The My apps page is displayed.
3. Click the app you want to add.
4. Click Add.
   You have added an app and can configure it.