From the 29th of November to the 2nd of December it was held online the Selection Workshop, in which the teams previously selected show their idea of design and scope of their experiment to a committee of experts. It was an occasion to learn more about the other experiments and to learn more about project design and organizations. Although the online format of the event, team ROMULUS followed the worshop in the same room at a Sapienza facility, following the sanitarian rules.