A S W D or key arrows to move around. By the way this is for PC users only or just laptops. If your touching one of the crewmates and you can kill them using the kill button. Once you've killed the crewmate you can report them by using the report button and if your touching the meeting table you can call a meeting. By the way don't say you found a bug how you can report a crewmate even if they're not dead. I couldn't figure a way to fix it so I guess it's a feature? If you're touching the vent and click the vent button you can vent and click one of the arrows to vent to one of the rooms.
Better version here: https://scratch.mit.edu/projects/634506228 jk.