Draw a spline
Click the mouse at position number 1. Release the mouse and move to position number 2. Notice how the Spline tool tracks the mouse. Click and release the mouse. Move to position 3 and click again. Repeat up to position 8. Double click on position 8. This ends Spline mode. If you forget to double click, hit the esc key.

Disrupt the path
Use the Reshape > Disrupt tool to open the Disrupt Options dialog. Set the parameters as follows:

X: 0
Y: 20
Z: 0

Click the OK button to accept.

Set views Use the Dolly (option key) and Pan (shift key) tools to size and position all four views so that the entire path can be seen in each.