Content creation

I have created two fill in the gaps questions as part of my interactive video but I am unable to get in and easily edit them. I seem to have to wait until I reach the point in the video before I can get in to make any changes.

Is there no method of scrubbing the timeline to get in and make the necessary changes? Also what are the buttons in the attached image for?

DCm

Is it possible to create an Audio Question and embed this into an Interactive Video OR Add sound to one of the interactions that the interactive video has? 

Hi... I'm a "dummy" as far as editing js or php is concerned... I've made a course presentation with a sequence of drag and drop questions. It's not responsive; on a mobile it's in miniature format, and the buttons are so tiny that it's difficult for adult fingers to move them. 

I've seen the articles about changing things so that it's more responsive, but I admit to being a bit too dense to know how to implement them. Also wondering why it's not automatically responsive anyway?

I'd appreciate any help with this!