As part of the ongoing work to develop Future Arrangements for System Services, EirGrid and SONI have been working with our partners DotEcon and Afry on the development of proposals for suitable future auction arrangements for System Services based on the High-Level Design set out by the SEM Committee (SEM-22-012). The focus of this work has been on the development of daily auction arrangements, initially for reserve services, but with the intention of creating a framework extendable to other system services.