Un-downloading TV Shows from Library
I have downloaded most of the episodes from a TV Show (in HD) onto my MacBook Pro and it is taking up too much space in storage. How do I un-download them from my library? (Basically, how do I get the download cloud icon (that is on the episodes I have yet to download to the library) back on the episodes that I want on the iTunes cloud and not downloaded onto my iTunes library on my computer anymore, so that if and when I want to watch the episode again I can just download it again - and when finished un-download it again...and so on.)????
MacBook Pro (13-inch Late 2011), OS X Mavericks (10.9.4)