How to draw a hole wizard with a spherical bottom?

Hello! I cannot seem to figure out how to make the advanced hole wizard cut that programs a rounded bottom. Attached is a part that is exactly what I want to know how to do, but it is subtracted, and I do not think I have the will-power to make so many spheres and cut them out of the part. Plus, you cannot revolve combine features. Does anyone have a video or step by step instructions on how to make a hole wizard cut that does exactly this?

Thanks,

Owen