Save the Children in the North West Balkans seeks an agency/company/organization (from now on: the Agency) to plan and implement Sustainability Strategy planning process for six partner organisations related to their organizational and financial sustainability, with particular focus on the drop-in centers services. As a result of this consultancy each partner organization will have developed their own sustainability strategy, including an action plan for its implementation. Engagement involves the development of a plan and methodology for strategic sustainability planning process and its operationalization in a form of the training for six partner organizations, which will be followed with direct support to each of the six partner organizations, including individual workshops, throughout the development of their own Sustainability Strategy documents and action plan(s) as two main deliverables from the engagement. The purpose and main goal of the strategic sustainability planning process is that each partner organization develops their own sustainability strategy and implementation action plan related to systematic recognition and long-term sustainability of Drop-in centers’ services for vulnerable children.