CLEAN : Fighting breaks out at French far-right candidate Zemmour's presidential campaign launch

The transcript covers a range of topics, starting with initial thoughts, moving through discussions on crosswalks and avenues, setting up and leaving, mentions of junior and the solar system, and concluding with final thoughts.

What does the speaker mean by 'Set up an hour. If they left.'?

What can be inferred from the question 'When did you come back?'