From the manual:

This Free, Prior and Informed Consent (FPIC) Manual is designed as a tool for project practitioners (herein referred as project managers) for a broad range of projects and programmes (hereinafter to be referred to as projects) of any development organization, by providing information about the right to FPIC and how it can be implemented in six steps.

This manual deeply rooted in a human rights based approach, is designed to assist development organizations to respect the right to FPIC when developing and implementing projects affecting Indigenous Peoples. The manual contains a six-step procedure to facilitate the FPIC process while showing its benefits, as well as providing the regulatory framework to be used when mainstreaming Indigenous Peoples’ rights within organizations’ policies and standards.

Manual for Project Managers: Free Prior and Informed Consent (Food and Agricultural Organization, UN)