Your approach is correct for columns A-C if that is the data you are looking for. Regarding box D, "Not Applicable" is only correct if you are not limiting your appointee's authority to inspect and/or receive all confidential tax information described in columns (a), (b), and (c).
If you want to limit the authority:
Examples of column (d) information: lien information, balance due amount, a specific tax schedule, section 4980H employer shared responsibility payment information, or a tax liability.