This guide supports National Standards Bodies (NSBs) in shaping Critical Emerging Technology (CET) standards that serve society effectively, with a focus on involving consumer stakeholders in areas like AI. While primarily aimed at leaders and engagement officers in developing countries, it is relevant for all NSBs and should be applied flexibly to national contexts. Used alongside with the ISO publication on consumer engagement, the guide helps NSBs strengthen stakeholder participation, understand real-world impacts of emerging technologies, align with international best practices, ensure standards reflect consumer priorities, and take steps to reduce inequalities and potential harms caused by these technologies.