Host a simulation
Create a class session and get a join code right away. No account is required.
Keep this browser tab open. No account means no way to sign back in: if you clear your cookies, close private browsing, or switch devices, you lose host control of this session for good — the room and its students stay put, but nobody can run rounds or reveal results for them again. Bookmark the control room page as a backup, and use the same browser for the whole class.