As the number of countries at risk of a deterioration of the nutritional status of their vulnerable groups' due to COVID-19 increases, the GNC Coordination team (GNC-CT) will adapt the guidance and support provided for Nutrition Sectoral/Cluster Coordination, Inter-sectoral/Inter-cluster Coordination, and Information Management, to increase the relevance and flexibility of approaches to respond to the evolving challenges and opportunities. The purpose of this document is to guide Nutrition Sector/Cluster coordination mechanisms at the national level on the adaptation of the core cluster coordination functions and working modalities, due to the COVID-19 pandemic