Hello. I have a question concerning the use of time machine. I would like to use an external hard drive to backup my entire Mac. That being said, I do not have enough space to store movies I edit on iMovie on my mac and thus I would like to store them ONLY on my external hard drive. Is it then possible to tell time machine to backup my entire mac, and also have a folder on my external hard drive that contains the movie files (which are not on the mac)? Thank you for reading!