How can I "edit points" for freeform in Storyline

This is so strange... I could have sworn I saw David Anderson do this in one of his live webinars.  In fact, that is what I came on here to find, but started here because I can't recall which webinar it was.  Probably one of the tips and tricks ones.  I'm either working so much I'm dreaming of SL features that should exist or suffering the Mandela effect!   Are you SURE this can't be done?   I mean, I assume you would know, but that memory seems so vivid and yet not vivid enough for me to remember all the steps!  LOL!   Oh well, I'll submit a feature request anyway as I'm another person that would love to see this feature.  For now, I just created the shape I needed in PPT, saved it as a png and then inserted into my SL file.