When a group or a set of objects are selected in the Scene Tree panel, or an instance is selected in the Instances panel, the Attributes Panel shows the list of parameters that can be changed for that selection. The panel is divided into several sections which can be expanded/ collapsed by clicking on the section title.
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Maxwell Render allows to apply a Modifier extension to alter the geometry of the selected object itself in render time.
The Triangle Groups section on the Object Attributes panel
The Modifiers panel allows you to add the modifiers to be applied to the selected object, as many as you want, that will be applied in descending order (the one in the top is the first in being applied to the geometry).
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