In the Catalog tree, right-click a geodatabase or feature dataset and select .

Use the da.InsertCursor in Python to programmatically add new rows (features) to an existing feature class.

Alternatively, use the Create Feature Class geoprocessing tool found in the Data Management toolbox. 2. Add (Create) Features

Enter a , select the Feature Class Type (e.g., Point, Line, or Polygon), and define your coordinate system. In ArcMap :