They aren't the ones who have to register. Lobbyists have to register any communication, and they do so because they assume that the employees of that office are appointed under subsection 128(1) of the Public Service Employment Act or because it's required by regulations. However, it has been confirmed to me that no one is appointed under subsection 128(1). In other words, these communication reports aren't necessary.
Things have to be cleared up. It's important to decide whether to keep subsection 128(1). If it gets kept, it has to be provided for in the act and apply to everyone. I would personally remove the reference to any section of an act, because those acts can change. The numbers can change.
We could also work together to determine which positions you believe should be designated public office holders and include that list in the act.