variable radius fillet

I just started learning CAD and I am currently working on a part that needs a reverse fillet. I already looked for answers on the forum and reddit, but all the ones I found worked by just removing a certain shape (e.g. a circle) from the edge, wich only works with straight parts. In my case I need that reverse fillet…

I want to use variable fillet. The only vertices available to set fillet values are the end point of the fillet path. Can I add more point to the path?