(btw never use a bit with a bearing in a CNC router! but you can get roundover bits without them… but you’ll get exactly that round over, nothing else)
If you have a grayscale model of your bevel already in CC pro … where are you getting stuck ? Are you familiar with how to do general 3D stuff, if not, I made a tutorial at Cutting STL models with Carbide Create Pro (nearly-2021 edition) for the basic steps.
The deviation you’ll need is that you need to make boxes around the area you want to cut out for the toolpath, which for you will be only the edges not the whole piece.