Hi Manuel,
I don't know what could be done in the node. So I will make some guess.
Maybe the node is equals as the TaskActivity, So both of them could create a Human Task and wait the task being completed.
Maybe the node is a container of other Activity, So it is equals as the GroupActivity. But I think the super-state is more like the GroupActivity.
If you could show more details of the node, I think I could make better guess. :)