1. Type Start PowerShell in the Command Prompt window to start Windows PowerShell.
2. Type Install-WindowsFeature Windows-Server-Backup and press Enter to install Windows Server Backup.
Additional information about Windows Server Backup can be found here https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/jj614621(v=ws.11)
Windows Server Backup Windows PowerShell Cmdlets can be found here https://docs.microsoft.com/en-us/powershell/module/windowsserverbackup/?view=windowsserver2022-ps