Votes are anonymous. The screen shows only totals and how many people moved.
For the lecturer: students can only vote live if they have been added to this page in the Share menu. Anyone who cannot connect sees a self-study version instead. To test the phone view yourself, open the link in a second tab with #student added to the end.
Good dilemmas have no obvious right answer and at least two options a reasonable manager might choose. The lens questions use general prompts for your own dilemmas.