This has to do with the notification groups you can set up in the first tab. You have set up all the messages for this default group. Then you can simply select “inherit from default” to use the same messages there without having to rewrite them.
Please see the information regarding Using “Notification Groups” https://www.manula.com/manuals/taxicaller-nordic-ab/admin-panel/1/en/topic/notifications?q=group
Remember that these notification groups can be applied to a customer account from the customer section.