iconoclast

Is there a way to disable the annoying split-screen on the navigation? I find it redundant since I have the information clearer on the cluster MFD and do not need it on the main screen.
I've read that some people found a way to enable split-screen through Engineering Mode so I assume I could disable through there but I am not able to access the menu.
Does anyone on here know the method to access Engineering Mode on 5S1?