CmdID / PowerShell / Cmdlets / Set
Set-AppxDefaultVolume
Specifies a default appx volume. Windows Server PowerShell reference
From the Windows Server PowerShell reference 3 parameters Its page in the reference
Parameters
-VolumeSpecifies the path a volume.-Confirm, -cfPrompts you for confirmation before running the cmdlet.-WhatIf, -wiShows what would happen if the cmdlet runs.