Cycle playback in Ipad

I was trying to use the video tutorial for Dorico 6 to figure out controls for “cycle playback” in Ipad.

But the j bar pulls up nothing. I’m not sure how to undo the bars once I implement them. I got it working but one bar wasn’t playing at all. I was just trying to test it, didn’t create a score from it.

Didn’t see any instructions pulling up help for ipad.

See this earlier thread: