It iterates through a list and executes multiple activities simultaneously. It executes the slow processes faster, as they run in parallel. Refer to Office Documentation
CompleteCondition – It evaluates after any branch completes.
DisplayName – Add a display name to your activity.
Private – By default, activity will log the values of your properties inside your workflow. If private is selected, then it stops logging.
TypeArgument – Select type of the argument
Values – The collection of values used as parameters for each iteration of the activity contained in the Body. Body.