To Add Leaders or Leader Segments
In the drawing area, double-click the symbol to edit.
Select the Leader tab.
Click Add.
Select an object in the drawing to attach the new leader, or select the first point. Then select one of the following:
The first point on the original leader to add new leader segments.
A point on the original leader to add a new leader branch.
Click OK.
Tip:
To add a new leader node, select only one point on the original leader.
Use the grip points to move the leader nodes.