The Maxwell plug-in creates a toolbar for quick access to certain plug-in features:
Maxwell Render toolbar
Open Maxwell Render Settings: sets Maxwell as current render engine and opens Render Setup window.
Vray to Maxwell Scene Converter: launches Vray to Maxwell scene converter window, so you can automatically converter most of Vray scenes features to Maxwell.
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Maxwell Light Panel: opens a compact list of all the lights in the scene used by Maxwell, except the lights included in referenced files (mxm or mxs). It lets you activate, deactivate, select and easily change light intensities.