Time Track help needed to find resources

Does anyone know if there a training video or on the basics of the time track in Play Mode? I could find ones on complicated aspects on the time track, but little on how to use it in a practical, workflow kind of basic way.

Many thanks

This? Introduction to Play Mode in Dorico | Play Mode in Dorico - YouTube

Thank you, Dan. That is helpful. I was trying to adjust tempo for a pause bar earlier today, and got it to work. It was the first time I had used Play mode (!), so it was a bit scary.