Sometimes a facilitator is a referee, but more often it's about being a guide, the person who keeps the process on track. Sometimes a facilitator can help people solve problems and reach agreements, but it's always the client's call how much input a facilitator should have. I am happy to unpack issues and to probe, to suggest ways forward and to let the discussion move through the options to reach a conclusion.
I find panel discussions are fun to do, and useful for the audiences too. The participants have to share their views; that may mean some encouragement, some prodding, and sometimes even some interrogation.
Being an MC at a grand event is fun too, but it is a different beast altogether, and calls for quite a different set of speaking skills.