Select an editable poly object. > Modify panel > Polygon sub-object level > Edit Polygons rollout > Bevel Settings button
Select an editable poly object. > Polygon sub-object level > Quad menu > tools 2 quadrant > Bevel Settings button
Beveling involves first extrusion and then scaling the extruded polygon(s). Use these settings for beveling polygons in Interactive Manipulation mode

Group—Beveling takes place along the average normal of each contiguous group of polygons. If you bevel multiples of such groups, each group moves along its own averaged normal.
Local Normal—Beveling takes place along each selected polygon's normal.
By Polygon—Bevels each polygon individually.
Height—Specifies the extent of the extrusion in scene units. You can extrude selected polygons outward or inward, depending on whether the value is positive or negative.
Outline Amount—Makes the outer border of selected polygons bigger or smaller, depending on whether the value is positive or negative.
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