New-Item -Type Directory -Path "C:\MyFolder"
$Acl = Get-Acl "C:\MyFolder"
$Ar = New-Object System.Security.AccessControl.FileSystemAccessRule("username", "FullControl", "Allow")
$Acl.SetAccessRule($Ar)
Set-Acl -Path "C:\MyFolder" -AclObject $Acl
New-Item -Type Directory -Path "C:\MyFolder"
$A