Tools and presentations for the implementation of a multi-criteria support approach with examples of applications to the case of nature-based solutions (developed within the H2020 NAIAD project). The package includes: - A series of spreadsheets presenting examples of a (hierarchic) multicriteria decision-making model (AHP-like) applied to NBS choice and assessment (developped within the H2020 NAIAD project). - A series of generic spreadsheets which allow to calculate preferences as in AHP method for 2 to 7 criteria (developped within the H2020 NAIAD project) - A practical kit to be used to explain the principles of hierarchic multicriteria decision-making and implement it in an interactive way with decision-makers (developped within the H2020 NAIAD project).