Hot Key To Blank Main Display

When our choir does a special, I want to display the verses on the stage display and not on the main display. I used Freeworship for a couple of years before using Presenter. I just had to hit F7 and it would blank the main screen.

F12 in Presenter. https://www.worshipextreme.com/docs/77-keyboard-shortcuts

It may already be possible to do this with F12 BUT trying to restore the status quo after doing so is a dog's breakfast. This function has been extremely poorly implemented and needs fixing urgently.