CHANCES, the CHileAN Cluster galaxy Evolution Survey is one of nine extragalactic public surveys which will be carried out with the 4MOST spectroscopic survey facility that will be installed on the 4m VISTA telescope at Cerro Paranal in early 2024. Until now, we have largely focussed on the preparatory work of designing the survey and target selection. However, as we enter the final months before 4MOST begins operations and starts taking spectra, it is now time for us to look ahead to plan in detail the science we will carry out with all these spectra.

For this reason, we propose for all of the CHANCES team members to meet together in La Serena for a five-day workshop in January 2024, take stock of the work gone into designing the survey and target selection, and start discussing the key scientific objectives of the CHANCES survey and plan how to achieve them. The meeting will also cover preparations for the science verification observations due to be carried out in mid 2024, the first year of science operations, and development of the tools needed to efficiently analyse the 4MOST spectra of galaxies as they arrive.