Cone

Cone button

A cone is defined by:

First point which is located at the center of the first end.
Second point (Stretch) which defines the center of the other end and thus the direction and the length of the cone.
Click one of the action points at the center of the cone end (selected one is rounded by rectangle).
Use context menu (RMB) to select an action Scale Shape.
Use context menu (RMB) to select a method to define the radius for the cone.
Select the other action point and repeat.