Clip within a clip

Great things posted on this forum, I continue to learn a lot. I did have a quick question that I have not been able to find the answer to as I have searched the forums.

I am editing a talk that some one gave and they had PowerPoint slides that went with their talk. I want to pull the video of the speaker down into the corner of the video and display his PowerPoint presentation at the same time. I do have access to Keynote, and I can go the LiveType route. My question is two fold.

1.) Can FC play a clip within a clip and where can I access that feature?
2.) Can I drag and drop PP slides into the video via PP or Keynote or do I need to recreate his slides in LiveType?

Thanks,
Chris