You can rearrange these panels by dragging on their name.
Then if you like a layout, you can save it in the View menu - Layout.
You can also disable and enable panels in View.
BTW, if you're using a green screen already, and want to mask the person completely, I don't think the person needs to dress up in blue necessarily. You should be able to separate the person with a combination of some effects, like the levels, invertRGB, and then colorize it, to then chroma key.