Nutrition actions and outcomes are to be an integral feature of the programme.

The programme being multi-sectoral could likely include the WASH cluster (water, sanitation, hygiene), the Global Protection Cluster (protection of a displaced population, trafficking victims, children, etc.) and other groups, but most definitely the nutrition cluster. And humanitarian workers will either be trained to execute nutrition related actions, or receive relevant nutrition training and work with the nutrition cluster coordinators.

The following link explains better the cluster system and the multi-sectoral response/action.
https://emergency.unhcr.org/entry/41813/cluster-approach-ias...

Examples:
[ENG] The authors note that the State party is implementing an “Integrated Action Plan for the Social Integration of Greek Gypsies”.
[FRA] Le Comité prend note avec satisfaction du plan d’action intégré pour l’insertion sociale des Roms grecs.
General Assembly Official Records - Sixty-fifth session Supplement No. 40 (A/65/40)

[ENG] 47. Country experiences show that progress, such as sharp reductions in preventable child deaths, increased number of children at school and strengthened social protection systems, are possible when concerted and integrated action, adequate resources and political will are consistently applied in support of children’s rights and well-being.
[FRA] L’expérience de différents pays nous a enseigné que le progrès (comme la forte réduction du nombre de décès évitables d’enfants, l’augmentation du nombre d’enfants scolarisés et le renforcement des systèmes de protection sociale) était possible dès lors qu’une action concertée et intégrée, des ressources suffisantes et une volonté politique étaient systématiquement mobilisées en faveur des droits et du bien-être de l’enfant.
General Assembly Sixty-ninth session - Item 65 (a) of the provisional agenda - A/69/150. Promotion and protection of the rights of children - Status of the Convention on the Rights of the Child - Report of the Secretary-General Summary