To install Hybrid Backup Sync on a QNAP NAS, first log into the NAS as an administrator and ensure that it is connected to the Internet. Go to App Center > QTS Essentials or Backup/ Sync, scroll down the page until you find Hybrid Backup Sync, and click Add To QTS. Start using Hybrid Backup Sync After the installation is complete, click the shortcut icon on the main menu or desktop to start using Hybrid Backup Sync.