in Scene Manager > materials, right-click and choose New material, New Emitter, Import MXM, or material Wizard.in the Material Editor’s Options menu, choose New material, New Emitter, or material Wizard.
The main difference between the two is that while MXED is used to edit Maxwell MXM files, the plugin's material editor is used to edit embedded plugin materials. To open the material editor, click Maxwell > Plugin Windows > Material Editor, or the appropriate button in the plugin’s Tools toolbar. The plugin implements a custom material editor, which is very similar in operation to Maxwell's MXED standalone material editor:
