To Duplicate a Handle
You can duplicate a handle when creating a Round, Draft, Extend, Offset curve, or Datum Point feature.
1. When creating the feature, right-click a handle to access the shortcut menu.
2. Click Add radius (Round), Add Angle (Draft), Add (Extend and Offset curve), or Duplicate (Datum Point). The handle is duplicated. You can then drag the handle to place it.