OK. So if you're trying to prevent someone from changing a GPO, you won't be
able to do it through the delegation of Control Wizard. That is only
designed to delegate access to AD objects and its incomplete for delegating
a GPO. I would recommend using either the ACL Editor on the GPO itself, or
better yet, use the GPMC, which has a nice, neat Delegation tab built in
that encapsulates the various permissions in easy to understand ways.