When do I add punctuation?

The pre transcription exercises in the manual have no punctuation.  My assumption is that when taking dictation, the only punctuation taken would be periods, question marks, and end of paragraph marks.  Is the idea that the stenographer also includes commas when possible? What about hyphens and quotations marks?  Is this more of a style choice able to be edited later or is it desired that the writer include them during dictation?  Also, were commas always to be circled?

(by Ryan for group greggshorthand)