You can create a chamfered corner at the location of a vertex using the Chamfer Vertex feature. Chamfer Vertex removes a vertex and creates a chamfered corner.

To chamfer a vertex

1. Select the vertex you want to chamfer.
2. Choose Edit Mesh > Chamfer Vertex.
   NoteBecause of the way Chamfer Vertex works internally, the node it creates has Length and Divisions attributes. These attributes are locked and are not meaningful to edit.