Editing video properties

Hi, I have a question I hope someone can answer!

I am using the Articulate tab in PowerPoint and choosing to add a video from a file to my presentation. Once the video uploads I get the window with choices to view the video in the window, start automatically, show the control bar and choose to delay the video start.

I make my choices and everything is great - however, what if I change my mind (and I have!) I now want the video to start playing after say 30 seconds to allow for some audio to happen first.

This is a change from when I uploaded the video - so a change to the settings - I cannot find a way to change these settings without deleting the video and adding it in again so the window appears.

Does anyone know if there is a way to change settings without going through uploading the video again?

Hope so

Thanks, 

Jane