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From the Maxwell menu you can start the the main plugin commands with a single click, and you can open/close the Maxwell plugin Palette.
Maxwell plugin Palette
Maxwell plugin has its own Palette from where you can you can start Maxwell Render, Maxwell Studio, FIRE, etc. with a single click. You can also manage here the Maxwell related parameters of items, Maxwell Library objects, etc.
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For more information about Maxwell Render parameters inside ARCHICAD please read ARCHICAD - PhotoRendering Settings.
Material...
You can adjust the additional Maxwell material parameters inside the Material Settings window.
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For more information about Maxwell materials inside ARCHICAD please read ARCHICAD - Material Settings.