You can open another display when a button or image is clicked by setting the action to Trigger Another Display in the link settings.
Steps
Click the button or image on your display to open its link settings.
Under Action, select Trigger Another Display.
Choose the display to be opened.
Save your settings.
The display being opened must also be in Live Mode, otherwise it will not open in the production environment.
Make sure to turn off all triggers on the display being opened — otherwise it will open before being triggered.