PPT notes are easy to use when speaking speakers.
When the show PPT, check the "Use Presenter View."
Generally you will not see when the show notes, but you can call up display, is in the slide show, right click, select [screen] - [] speaker notes.
You let this situation can be achieved when people see the PPT play full-screen slide show, but you see is the spokesman view, you can display a slideshow of the current speaker notes, preview the next slide, timing etc., very convenient.