Finding EXE files to add on RADEON Card from WINDOWS STORE.

I have downloaded a couple of games like Asphalt 8 airborne and Halo Wars 2 to my new laptop from the Windows Store. Since Windows Store is detecting INtel Graphics card 8 and not the Radeon card, I am advised by dell to locate the EXE file for both the games in order to manually add them on radeon. I am unable to find any EXE files. Does  it mean that both these games cannot use Radean card at all?, I have downloaded a couple of games like Asphalt 8 airborne and Halo Wars 2 to my new laptop from the Windows Store. Since Windows Store is detecting INtel Graphics card 8 and not the Radeon card, I am advised by dell to locate the EXE file for both the games in order to manually add them on radeon. I am unable to find any EXE files. Does  it mean that both these games cannot use Radean card at all?