We've updated actions. Actions are used to process data. They run either in the foreground (basically in your browser) or in the background. It's no longer needed to use foreground actions or foreground import events when you need to wait before the task has been finished. You can now specify a callback action for both actions and import events.
Callback actions to do more parallel processing in background jobs
Even when the task is handled in the background, the selected callback action will be called when the task has been finished. This way you are able to do more parallel processing in background jobs even when you sometimes have more specific timing requirements.
You can enable and insert a callback action on the action form at the bottom below variables.