Share one clear number reference with a group
Keep a group oriented during a class, rehearsal or workshop with a visible shared number.
Explain what the number means: an exercise, an activity or another agreed cue. Use one meaning for each activity.
One device controls the number while connected devices display it. Join the intended session and test an update.
Put the displays within normal sight of the group. Check the font size and contrast from the farthest seat, and announce changes aloud for people who cannot easily see the display.
Give participants time to follow a change. Test the internet connection before the activity and keep a board or another simple cue available as a backup.