Path to Scheduled Task Manager: Scheduled Tasks > Scheduled Task Manager.
The vBulletin Scheduled Task Manager allows you to control tasks that will be executed by vBulletin at specific intervals, much like the Unix Cron system.
When vBulletin is installed, it has a number of tasks already set to run at specific times. Using the Scheduled Task Manager, you can modify, disable or delete an existing scheduled task. You can also add your own scheduled task definitions.