This document proposes a methodology for the implementation of a multi stakeholder platform that may be utilized by an organization as a form of intervention in order to solve a specific problem. The methodology considers four stages: (i) Baseline analysis in which the causes of the problem, the stakeholders and the reasons for a lack of agreements are analyzed, and the existing negotiation processes are assessed; (ii) Ex ante evaluation, which includes the assessment of whether an intervention is needed, whether it is an opportune moment and the kind of intervention needed; (iii) Design of the platform, which encompasses the definition of the convening organization and the facilitator, the basic structure of the platform, the relationship between the platform and the constituencies, and the structure of the sessions, and; (iv) Monitoring and evaluation based on the objectives of the platform and the actions of the facilitator. The methodology establishes a general framework that should be considered in a flexible manner and according to the specific characteristics of each case. This can be deepened in two directions: testing the use of tools to support negotiations within the process and; testing its usefulness in permanent platforms.