在 Apple School Manager 中購買的應用程式（包括免費應用程式），需要啟動 VPP Sync 才能將這些應用程式推送到 ESP System。 完成後後，您可以將應用程式分配給需要的設備。

If you have purchased apps (even those free apps) in Apple School Manager, you need to trigger VPP Sync in order to push those apps to ESP System.  After that, you can assign apps to devices.