This document provides guidance on running a creative arena (living lab) to codevelop systemic innovations for climate-neutral farms. It outlines key steps: 1) defining objectives and scope, 2) understanding the legislative context, 3) identifying stakeholders, 4) designing the plan using participatory methods, 5) implementing the plan through workshops, and 6) evaluating outcomes. An example creative arena from Ireland is also described where farmers codesigned an ideal farm model and policies to achieve climate goals. The creative arena approach aims to empower farmers and co-develop shared solutions linked to other project tasks on testing and upscaling innovations.