Yeah, you get to them from different links (either New Broadcast, or Copy):

![broadcast_list](https://f.cloud.github.com/assets/1028814/1200232/79ee1b1a-2521-11e3-93f1-e7297e1d4787.png)

If you click copy, it just opens up the new broadcast ui with everything pre-populated, defaulting the send time to "Now".