CmdID / PowerShell / Cmdlets / Grant
Grant-ClusterAccess
Grants access to a failover cluster, either full access or read-only access. Windows Server PowerShell reference
From the Windows Server PowerShell reference 5 parameters Its page in the reference
Parameters
-ClusterSpecifies the name of the cluster on which to run this cmdlet.-FullSpecifies that the user gets full cluster access.-InputObjectSpecifies the cluster on which to grant access for the given user.-ReadOnlySpecifies that the user gets read-only cluster access.-UserSpecifies the user for whom to grant cluster access.