2015 HD update 6. I have a older lap top so all the tool bar doesn't show.I tried to find away to remove the mixer from the screen so I can see the rest of the tool bar. I found away to put smaller one on top of the main one but not hid it.thanks Ed

Yes, the Mixer in 2014 and 2015 cannot be moved, and blocks other items on the display. There's a thread here that discusses a way to hide it. After-market though, so use at your own discretion...

CTRL T is a toggle that basically hides all the toolbars and mixer when you don't want them in the way, then toggles them back when you need them

That might help, even if it isn't exactly what you were asking for.