As per the GNSO Operating Procedures(link to https://gnso.icann.org/en/council/op-procedures-01sep16-en.pdf), Chapter 5, the definition of Statements of Interest is “A written statement made by a Relevant Party that provides a declaration of interests that may affect the Relevant Party's judgment, on any matters to be considered by the GNSO Group.” Statements of Interest (or SOI) are a mandatory requirement for any GNSO Working Group member (See section 5.3.1 of the GNSO Operating Procedures) and are published here on the GNSO Statement of Interest wiki space which is publicly accessible. GNSO Support staff are on hand to assist if members run into difficulties completing their statements.