On 15 March 2024 SONI and EirGrid published a consultation paper on proposals for the design of the day-ahead system services auction (DASSA): https://consult.soni.ltd.uk/consultation/soef-markets-–-future-arrangements-system-services-–-dassa-consultation-paper-–-march-2024. The TSOs held a workshop on 24 April 2024, presenting our proposals in the consultation paper and hosting a Q&A. This document contains the slides presented.