Volume Toolbox show/hide?

Ok, somehow I managed to pop open this Volume Toolbox and I have no freaking idea on how I opened this or how to close it. It’s a great idea, but the interface implementation is horrible if there’s not a simple intuitive way to close the dang thing. Seriously, where is the option to show/hide this thing?

5 posts were merged into an existing topic: I cant close the Capture volume gate thing in the bottom of my screen, ts been getting on my nerves