Visual Paradigm Sub-activity diagram icon

In a UML Activity Diagram, an Action representing a Sub-activity diagram can be signaled with a "trident" icon, like in this picture:

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I'm using Visual Paradigm as UML editor and I need to use this icon whithin some activity diagrams. But I haven't yet realized how I can do it.

Thanks in advance to any helper.

Solution

Create an action, right-click on the action and open the specification:

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In the specification, select "Call Behavior Action", and in the behavior select "Create Activity", as shown below:

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This will open an activity definition dialog, and after filling all details and clicking apply on all dialogs, your action will have the fork:

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Enjoy.