The synchronization can be manually run on the User Synchronization tab of the MyQ Web Interface, or it can be set as a scheduled task on the Task Scheduler tab.
Manual synchronization run
On the User synchronization settings tab, enable the synchronizations that you want to run, and then click Synchronize now on the bar at the top of the tab.
Scheduled synchronization run
On the Task scheduler settings tab, you can setup a scheduled run of the synchronization. For more information about this option, see Task scheduler.