BE 2014 media and config

Hey folks, 

we just upgraded to BE 2014 from 2010 and it's a world of difference. I am starting to get use to the new setup for configuring jobs (associate the job with the servers) but the media set is what's driving me crazy.

I created a B2D going to a NAS and I would like to associate that B2D folder with a media set I configued for full overwrite (no OPP or append)

I created the media set under "Storage" went to the details and then to the "Media" tab on the left but I can't see where to add my B2D folder to this media set. It just says "No Media"

I also can't set the OPP to 0 hrs like I used to be able to in the old 2010. I did turn off the "Media Overwrite Protection Level" but I can only set it to 1 hr.

thanks,

Ken