Create a custom rewind button?

I have a Storyline 360 video, recorded as a screen recording to demo software and with voiceover included.  When the user plays the video, I definitely want them to be able to rewind a couple of seconds/minutes in case they miss anything but when dragging the seekbar, the bar moves but nothing changes, the voiceover and the video carry on regardless. If I click pause and then drag the bar all the way to the end, it makes no difference.  I have watched the conditional seekbar help and everything is set that way but I still can't rewind.  Is this a feature request or is there now a different way to do this?

Thanks

Diane