The IOM manual aims to facilitate MHPSS experts and managers in designing, implementing and evaluating community-based MHPSS (CB MHPSS) programmes, projects and activities for emergency-affected and displaced populations in humanitarian settings. It is specifically designed to support managers and experts hired by the International Organization for Migration. However, it can also be used, in its entirety or in some of its components, by MHPSS experts and managers working for IOM’s partners, including international and national governmental organizations, non-governmental organizations (NGOs), countries, donors and civil society groups. For this reason, the document is open source, refers to tools and researches of different agencies, and was conceived and reviewed by a variety of experts and practitioners from several organizations.