# Adding triggers

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](https://help.qlik.com/talend/en-US/administration-center-user-guide/8.0/how-to-add-simple-trigger-onto-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](https://help.qlik.com/talend/en-US/administration-center-user-guide/8.0/how-to-add-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](https://help.qlik.com/talend/en-US/administration-center-user-guide/8.0/how-to-add-file-trigger).

### In this section

* [How to add a simple trigger onto a task](https://help.qlik.com/talend/en-US/administration-center-user-guide/8.0/how-to-add-simple-trigger-onto-task)
* [How to add a CRON-based trigger](https://help.qlik.com/talend/en-US/administration-center-user-guide/8.0/how-to-add-cron-based-trigger)
* [How to add a File trigger](https://help.qlik.com/talend/en-US/administration-center-user-guide/8.0/how-to-add-file-trigger)