Registration was limited to 100 participants with four tutors. The timeframe of 3 hours may not have been long enough to effectively use this format. Indeed, one attendee commented "I'm kind of sad that time flew away so quickly!". There was no negative feedback, but the hands-on tutors were not kept particularly busy for such an audience size. Nevertheless, the participants valued the opportunity to engage with the experts and the personal attention they received, and the workshop was judged a success based on the feedback collected from attendees. Case Study 4 -AiiDA tutorial This hands-on was part of a workshop that introduced the members of the European BIG-MAP project to a range of software tools for computational materials science, including SimStack [38], ASE and AiiDA . The schedule is shown in Fig. and started in the morning with 20-minute introductory presentations of each tool in the plenum. In the following, the ~80 participants were split up into three parallel Zoom sessions for the handson (2h on each tool).