When creating a task, you might have several task steps and today all of these steps are sequential. A nice feature would be to be able to repeat some of the steps in the task several times. It might be usefull in case you'd like to select a feature and edit it's properties, and then repeat the process with another feature.
As shown in the attached image, the button should be enabled when step 5 has been run and take the user back to the configured step (in this case nr 4).