(1) A meeting or other gathering of individuals for which lobbying is a purpose or reasonably foreseeable result must be reported by or on behalf of the sponsoring person in accordance with WAC 390-20-143 and other applicable provisions of law: Provided, that the executive director is authorized to provide written guidance how all reportable information relative to a particular gathering must be reported on the L-2 Report whenever the application of the appropriate provisions of law is unclear to the reporting person, and this interpretation must be reviewed and approved, modified or rejected by the commission at its next regular or special meeting.

(2) Any other lobbyist reporting such a gathering may incorporate by reference in their L-2 Report, an L-2 Report which is filed on the sponsor's behalf and which reports the gathering in accordance with applicable provisions of law, including WAC 390-20-143(2) and subsection (1) of this section.