I am successfully able to create a number of custom metaboxes. There are a number of tutorials online that help with that.
My question is how to include embedded options in a custom metabox?
So, what are embedded options? Well, if you take the "Publish Post" metabox, for example, this is what you will see:
Notice that if you click on the "Edit" link that is circled in red in the image above, this is what you will end up with: