I am trying to group values through arcpy. So, I would like to group all approved together and all reject together. But I am not sure how to do it through Python script. Below is the part of the script:
layer3 = arcpy.mapping.Layer(r"C:\Users\Documents\NGN\Regions\MW_Decision.lyr")
Sym_layer3 = r"C:\Users\Documents\NGN\Symbology layer new\MW_Decision.lyr"
arcpy.ApplySymbologyFromLayer_management (layer3, Sym_layer3)
arcpy.mapping.AddLayer(df, layer3, "AUTO_ARRANGE")
lyr3 = arcpy.mapping.ListLayers(mxd, "", df)
lyr3.visible = False
lyr3.name = "MW_Decision"
Any help is appreciated.