You can run saved tasks from two locations:
From the Manage Tasks screen, click the Run (play) icon next to the Task you want to run.
From the Add/Edit Task screen, click the Save & Run button.
You can also create a task on-the-fly without saving it by clicking Add Task from the Manage Tasks screen, configuring the task and clicking the Quick Run button.
Note: A Quick Run does not automatically save and is not captured in your Activity History.