A Moderator's Questionnaire

I've moderated many panels over my 35 years as a pro writer, including WorldCon, World Fantasy Con, and SFWA's Nebula Awards Weekend. I've participated both as a panelist and audience member in those that were beautifully handled and those that were disasters. 
Skill as a writer does not qualify a person to moderate a panel, even though big names may draw an audience. Therefore, I think it's a good thing to consider what actually makes a good moderator and look for that, not just name recognition or fannish or literary credentials.

Convention programming might consider a follow-up questionnaire for anyone checking the box that they'd like to moderate a panel. Questions might include:Have you moderated a panel before? What was your experience? What went right? What challenges did you face?If this will be your first experience as a moderator, what background or leadership skills do you have?What's the worst thing that can happen on a panel? How would you as moderator handle it?How should a moderator express her or his own opinions on the panel?What is the responsibility of the moderator to make sure every panelist has the chance to speak? How is this best accomplished? How do you as moderator handle a panelist who is disruptive, loud, rude, or insulting to co-panelists or audience?