Call Activity
The Call Activity attribute shows that the selected shape identifies a point in the process where a global process is used. When enabling the call activity option, it will make the selected shape boarders bolder than the original.
The Call Activity applies only to the Task shape.
![call activity 1](_images/call-activity-1.png)
This will create a visual queue on the boarders of the selected shape.
![call activity 1](_images/call-activity-1.png)
This will allows you also to create a "Global Task" by enabling the "Global Task" attribute.
Then you will be able to manage your "Global Task" in the Hidden items menu.