The NLRB’s public website is the place to look — the agency posts Operations‑Management (OM) memoranda and other guidance on its Guidance/Memos & Research pages. The Clarification notice and its Q&A are on nlrb.gov; if a formal OM memo or internal protocol is issued for public release it would appear on the Operations‑Management Memos page (or under Guidance/Memos & Research). If the protocol is still internal and not published, it is not available publicly beyond the Clarification/Q&A.