To schedule the execution of your tasks, you can set time-based triggers (simple or CRON) or event-based triggers (file) onto a task that will start its execution.
If you want to schedule one or several execution of a task at a precise moment, you can use the simple trigger. For more information on how to use simple triggers, see How to add a simple trigger onto a task.
If you want to schedule one execution of a task on a regular basis (daily, weekly, monthly etc.), you can use the CRON-based trigger. For more information on how to use CRON triggers, see How to add a CRON-based trigger.
If you want to execute a task on a file-based event, such as the presence, creation, modification of the file, you can use the File trigger. For more information on how to use File triggers, see How to add a File trigger.