That should be expected and respected. Participation should be voluntary. Some people will take the initiative to write up their sheets. Others may require more prompting. A simulation is like a practise run for the real thing.
Simulations can be simple yet be quite informative.
The group decides on a communication system. Then a message is sent using the system. Another system is asking everyone to look at a noticeboard or web site. By trying different systems, the group can choose the ones most effective for the group. The group tries to communicate in the face of disruption or disinformation.