Start a voting session on your board using the "Voting" side panel. To open this screen, click the "Voting" button on the right-side toolbar.
On the "Voting" screen, configure the number of votes per user and session duration. Then click the "Start voting now" button. Each user can now join the session and vote board cards and issues.
Watch the participants' progress on the "Voting in progress" screen. Voting will end when it times-out, but you can also click the "End voting now" any time to close it.
Finally, when the session is over, see the results on the "Voting results" screen. From there, you can either resume voting or remove results and start a new session.