Next week, I'm going on a road trip to make a presentation of our current application on several places. Essentially, it well be two of us doing the presentation, but circumstances (among them, HR,...) demand to bring a third colleague with us. I think that's a good idea for team building purposes.
However, I cannot quite think about any task assigning to that third member. His personality, character and knowledge about the application to be presented don't quite suggest him presenting as well.
So my question is, which valuable task could I assign to him? I think it's important to give him the feeling that he can contribute something valuable as well.