Powershell script to set Registry Key Permissions with Subkeys for a User ( Needs to be run as admin as its changing things in HKCU:\Software\Policies

$acl = Get-Acl HKCU:\Software\Policies\Google
$inherit = [system.security.accesscontrol.InheritanceFlags]"ContainerInherit, ObjectInherit"
$propagation = [system.security.accesscontrol.PropagationFlags]"None"
$rule = New-Object System.Security.AccessControl.RegistryAccessRule ("domain\user","FullControl",$inherit,$propagation,"Allow")
$acl.SetAccessRule($rule)
$acl |Set-Acl -Path HKCU:\Software\Policies\Google