Handy Backup Home Standard is a client for Handy Backup Network Server, isnt it?

No. Handy Backup Home Standard is a separate application which is not meant to be used as a client of Handy Backup Network Server. The right software to install on network workstations is called Backup Network Workstation: select it when you are prompted to select an application during Handy Backup installation. For more details, please refer to Handy Backup Installation in the User Manual.

For a complete guide on deployment of Handy Backup Network Server, please refer to Installation of Handy Backup Network Server in the User Manual.