Sure:
Right-click in the blank area of the mixer panel and uncheck "Dock Mixer in Docker". Then drag it wherever you want it and resize it.
You might also want to create some Screensets of different views you want to see. Press Shift + F7, F8 or F9 to create a screenset, then press F7, F8 or F9 by itself to recall it.
Hit Ctrl+E if you want to see the Screenset management window.
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