Click New Action (icon) in the toolbar and enter a name for the action.
Add a Begin Node to the drawing pane.
Add the action flow to the drawing pane and ensure that all actions are defined. If you do not define them here, you must define them on the Rules tab when finalizing the event rule. Ensure that every flow ends with an End Node.
Connect at least one action in the flow. Left click over a terminal and drag the mouse to connect the terminals on the nodes. Repeat for all nodes on the pane.
Click Validate. The validated action can be used in an event rule.