Choose Connection and Action. The action’s own options then appear on the node.
Three triggers can all be enabled at once, independently: connecting an event to Event always runs the action when that event fires; Execute on startup additionally runs it once when the workflow starts; Execute on change additionally runs it whenever a connected option value changes. Use startup execution only when repeating the action after a restart is acceptable.
Connected values supply options shown for the selected action.
If the action fails, the node reports it through its own error state, the same border indicator described in Read what a node's border is telling you, not through a separate output event.