Follow me uses Chrome’s on-device speech (where available) to match what you say to the script and scroll there — including if you skip ahead. Needs Chrome (desktop or Android). iPhone: use Chrome/Safari; mic follow works best on desktop Chrome today. Auto scroll is the old timed fallback.
Near camera puts a solid two-line reading shelf under the iMac camera (script stays dim underneath); turn on Mirror if the screen faces you; Record saves a WebM for iMovie/Final Cut. Use the Mic menu to pick your input (Record uses it directly; Follow me usually follows after you select).