When a Sequence node is triggered, it executes all the Actions connected to the output pins in order. Thus, it executes all the Actions of a pin, then all the Actions of the next pin, and so on. It is useful to organize groups of Actions.

The next screenshot shows the Sequence node in use. The Print String functions are being used to show the order of execution. Note that if the Branch node returns False, then the execution continues on the next output pin of the Sequence node.

The Add pin + option adds output pins. To remove a pin, right-click on the pin and choose the Remove execution pin option: