You can set the auto-refresh times for the Central Dashboard and for Alert lists.
In Service Center, click Configuration > System Settings.
Click the General tab.
To set the auto-refresh time for the Central Dashboard, enter a value in minutes on the Central Dashboard Refresh Rate box.
To set the auto-refresh time for the Alerts listing, enter a value in minutes in the Alerts Refresh Rate box.
The Alerts Viewer is a live view that displays alerts as they are received by Service Center. The auto-refresh settings have no effect on its operations.
Click Save.