The professional graphics industry has adopted this method of input and it takes getting used to. Select the Bezier Input method using the button on the Tool Pane. To begin, click and drag. This will create an initial Node and a Bezier handle. The next time you click and drag, you will be creating the points needed to complete a Bezier curve section, and also begin the next one.

If you simply click, you will create a flat curve – a line.

To create a cusp, hold the ‘ctrl’ key down when you click and drag.

Right-click to end your input.  Holding the ‘Ctrl’ key when right-clicking will close the shape.