Remote presentation

What are the basic steps to do a remote control presentation?

I might be wrong, but I understood the question as being a “remote control” presentation, not a presentation remotely.

I would like to know the best suggestion to use Prezi during a classroom presentation, where one can walk around and choose part of the presentation depending on how the audience interacts. I have been using Powerpoint/Keynote on a Macbook but am now trying Prezi on an iPad.

As I understand it, there is no way to use an Apple pencil to add notes on an existing presentation (like I can do on PP/Keynote)?