Sometimes when Zoom opens, it does not display the conference on both screens.
1. If the second screen is showing the ZoomVideo by ECBOCES logo, exit the conference and rejoin it and that should now display correctly.
2. If the second screen is showing a computer desktop, exit the conference, then exit the software (move the white mouse until you see the exit and logout buttons appear on the Zoom Video screen, click on Exit and enter your 4 digit code). Then reopen the software (double-click on the Zoom icon on the desktop) and rejoin the conference.