No need to be embarassed! Not sure what you are referring to when you write, " … the Audio editor" … just so there’s no confusion about terms - what do you specifically mean by that, or where are you reading that?
It’s a good question. You first have to create an Audio Part with the pencil on an audio track. Then double click it.
You can also select “events to part” with audio events selected. Audio Parts are just “containers” to put Audio Events in so that it is easier to move or resize multiple events as a group.
HTH
J.L.