Once your clicker is setup, you can start answering questions
In order to use your clicker to input an answer, polling must be
open on the presentation slide. The status bar at the top of the
presentation will reflect when polling is open (a green box will
appear with the words Polling Open), and when it is closed (a red
box will appear with the words Polling Closed). Press the key that
corresponds to your answer on the slide when polling is open.
A check mark is displayed on your device along with your answer if your answer was received properly.