In general a corner round tool is used to apply a radius instead of a chamfer to the edge. In CAMWorks, the user have the ability to use the corner round tools available in the technology data library or define very easy a new one. If you want to access a corner round tool, go to tool crib and then add a new tool from library, just like in the photos below:
If you want to learn how to use the corner round tools in CAMWorks, watch the video below. For any questions or remarks, please feel free to contact me.