When you are lobbying a public office holder, you report it in your Registration Return by identifying their Ministry or Provincial entity. You do not identify the individual public office holder in your Registration Return. 

When you are lobbying a senior public office holder, you report it in a Lobbying Activity Report. You name the senior public office holder, their title & their Ministry or Provincial entity, the date of lobbying activity directed at the senior public office holder, and the subject matter about which you lobbied them on that date.