When I click on a meeting in calendar view, a "pop-up" appear with 2 button Save and cancel ("Enregistrer" & "Annuler" in French Version).

How can I add a Delete button here to delete the meeting, or How can I delete it in calendar month view(not week or day because it's a commonplace issue )?

This is a global question, not only for meeting object but this is the first time someone ask me this.