CmdID / PowerShell / Cmdlets / New
New-FilePlanPropertySubCategory
Use the New-FilePlanPropertySubCategory cmdlet to create file plan property subcategories. Exchange PowerShell reference
From the Exchange PowerShell reference 4 parameters Its page in the reference
Parameters
-NameThe Name parameter specifies a unique name for the file plan property subcategory.-ParentIdThe ParentId parameter specifies parent file plan property category for this subcategory.-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.-WhatIf, -wiThe WhatIf switch doesn't work in Security & Compliance PowerShell.