Hover the mouse over the tabs and buttons for a description.
Tabs and buttons with descriptions commencing with ‘GOTO’ can be clicked to simulate touch panel action.
Touch the Computer button to show the iMac on the quad display.
If the presentation contains an audio component (YouTube etc.) touch the Audio tab and select Sound to follow Displays. Ensure the iMac volume is turned up and not muted. Touch and slide the Program Volume button to adjust the playback volume.