Autorefresh for Reporting and Dashboards Modul which was introduced with HP Service Manager 9.40

I would like to present my customer the new reports and dashboard modul to replace a custom made webapplication.

I know, that we could schedule an automated report (html, pdf, email, file system). But I would like to have an autorefresh of the dashboard tab inside of the hp service manager web client. how could I configure this? I remember that this autorefrsh was newly added, but I could not remember were to configure it.