The planning process for DPPI FLEX 2023 continued with the 2nd Planning conference that was held in Brcko, Bosnia and Herzegovina from 20-21 June 2023. Prior the conference and as part of the preparation process two trainings were completed (Sphere in Urban Settings and Get Airports Ready for Disasters) and one is scheduled for July (Unmanned Aerial Vehicles). The conference was used to refine the exercise structure and the scenario and also visit the exercise locations.