Setting an alarm to sound once

To let an alarm sound once, you only need to specify the date and time you want the alarm to sound.

Note that you can select the date and time by clicking the button with the dots to the right of the date and time.

Note: if you're editing a date and time, ctrl+n will set this date to the current date and time, ctrl+c will copy the date and time, ctrl+v will paste the date and time.