1.) Power on the AV rack by using the button on the top right. Be sure to turn this switch off when finished. Here are three examples of the type of button you may see:
2.) Turn on the TV by using the remote that looks like this. It can be found in the drawer in the AV rack. Change it to the correct input for the iMac, HDMI 1.
3.) Quit ProPresenter. On the top bar of the computer screen, click the small TV icon. A drop down will appear and click ‘Mirror Displays.’ You should now see what you are doing on the computer, being displayed on the screen. Make sure to uncheck this when you are done.