Full-screen notifications: how to use it?

the Full-Screen Notification feature has been implemented. (from Ver.28)

In the case of a standard notification, it appears like this:

By selecting “Notification” on the setup screen,
and turning ON “Show full-screen notification when locked,”

When a notification arrives while the screen is locked,
a full-screen notification will appear like this.

*If no action is taken, it will switch to a standard notification after 45 seconds.

*If an alarm or Text-to-speech triggers at the same time, a full-screen notification will not appear, and a standard notification will be shown instead.

*Notify me in Advance (Advence notifications) will not be full-screen and will be normal notifications.