The tutorial explains how to use the Bootbox dialogs, which are customizable.
Your screenshots show that you are using the default browser confirmation dialog, which is not customizable.
@Teodor I’m following tutorial steps and according to tutorial: Flow Component and Bootbox Dialogs integrated in it.
So any additional steps needed to “enable” Bootbox Dialogs?
There is nothing additional to enable. Note that the Bootbox Dialogs are only available for Bootstrap 4 and not for Bootstrap 5. So if you are not seeing them, then probably you are using Bootstrap 5.