Presidian PDR-3222 and manual discrepancy

In the user’s manual for the Presidian PDR-3222 DVD Recorder, “skipping over commercials” is touted as a benefit (twice) of owning this machine. However, nowhere does it tell me how to do it! (I have read the manual word for word before posting this.) The terminology for this process on my other recorder is to “hide chapters” which I assume will be the same process on this unit. But, the only mention of “chapters” in this guide is to explain the definition.
Any thoughts?