Hi: It looks like you've got your browser maximized so you're not seeing the SAVE button at the bottom of that window. Can you resize your browser in the Virtual Lab ( try Ctrl and -) or grab the browser window at the corner and make it smaller so the window resizes. I believe the fields you need are at the bottom of the popup window, as shown here (from the demo video):
I'd recommend resizing your browser window before you go into the Visual Analytics Hub and see if that causes the objects that popup to be resized too. Also, remember to use Firefox in the Virtual Lab because Visual Analytics in the Big Data Module still uses Flash and that only works with Firefox -- I think that's what is in your screen shot, but it's worth mentioning again in case others with the same issue aren't using Firefox.
Cynthia