This is an advanced task, but it is very possible! You must Build!
I'm gonna point out a few steps so that you can follow them to the end result!
I think we should start with an easy VI.
1.) Create a VI that has Data/graphics that you wish to show. I created MAIN_only_window.vi
2.) Resize the Front Panel to only show the info that you wish to display.
I created three possible indicators/controls that are on the front panel. Two of those should be shown (stop button and data array) and one of those should not be shown (clearly labeled)
Make sure the icon is not visible on the front panel before proceeding. Resize the window to show exactly as you wish it to show w/out the tool bars/header.
3.) Build the File:
Click Tools, Build Application or Shared Library (DLL)
Pick Path/filename
Under VI settings "edit build settings"
change "window has title bar", "menu bar", and "tool bar" to "no" (click change and save)
4.) save/build and run the VI.
Chances are if you have seen VI in the forest it hasn't fallen.