Have a question? Click on the Raise Hand button on the bottom toolbar.  It will show up next to your name on the Participants list and on the upper right side of the box with your name/video in it. 

The raise hand button will become Lower Hand when your hand is raised.  Click on the button to clear the raised hand.

Use emojis to give class feedback. Click on the Reactions button at the bottom to open up the list of emojis and choose your reaction. Click on the Clear my reaction to clear any emojis you clicked on.

By default, they are visible to everyone, but you can click on the Share with Instructors/Presenters tab if you want to keep your reaction between you and your instructor. The reactions are highlighted in blue when you do this.

To learn more, read over the Raise Hand and Reactions guide.