Hi Anmol,
The operating instructions for your cRIO controller will describe the function of the "NO APP" switch on the controller, and how it is used to prevent a startup application from running. As far as including the Shared Variable Engine in your installer, when you right-click on Build Specifications in your project, you can select New >> Installer. Then under Additional Installers, you can include the NI Variable Engine. This will allow you to host the shared variable on your PC.
Regards,
James R.
National Instruments