CmdID / PowerShell / Cmdlets / Remove
Remove-ClusterAccess
Removes a user from the access list on the cluster. Windows Server PowerShell reference
From the Windows Server PowerShell reference 3 parameters Its page in the reference
Parameters
-ClusterSpecifies the name of the cluster on which to run this cmdlet.-InputObjectSpecifies the cluster from which to remove access for the given user.-UserSpecifies the user for which to remove cluster access.