Scheduled tasks
Click the Develop app, and then click on the Workflow schedule menu.
In page that opens click the Add button located above the list.
In the page that opens, under the Schedule section, fill:
The Name of the scheduled task
The Workflow to be executed
The User and Password under which to run the scheduled task
The Hour, Minute, Day of Month, Day of Week when to run the scheduled task
Click Save.
Once saved the scheduled task is installed.