Can anyone report STP even if they aren't a tax agent, e.g. a payroll officer?

There are three types of individuals who can report STP on behalf of a small business.  

• Lodging reports to the ATO as the employer: This option should be selected if no external TAX/BAS Agent will be lodging submissions to the ATO on the business's behalf and there is only one employing entity set up in the business.
• Lodging reports to the ATO as a registered tax/BAS agent: This option should be selected if an external tax/BAS Agent will be lodging submissions to the ATO on behalf of the business, even if there is one or more employing entity set up in the business.
• Lodging reports to the ATO as an intermediary for multiple employing entities: This option should be selected if the employer is lodging all ATO submissions and there is more than one employing entity set up in the business.

Payroll Officers or bookkeepers who are not registered Tax or BAS Agents cannot lodge STP on behalf of a business.