This decision tool is intended for those involved in the design, planning, implementation, and monitoring of a nutrition humanitarian response before and during an emergency. It aims to guide technical advisors and managers working on a humanitarian response to design and incorporate complementary feeding actions, whether they are implemented by individual organizations and/or by joint multi-agency humanitarian responses, for children 6–23 months of age, regardless of their breastfeeding status, at each stage of the humanitarian program cycle.