Fire event once in X hours
Events are fired every time a website visitor activates their triggers. This means that the same user can fire the same event multiple times.
If you want to fire the event only once per user’s session, turn ON the “Fire this event only once in x hours”.
This option is based on cookies, so it’s browser-specific. If the same triggered is fired on a different browser, or if the cookies are deleted, it won’t work.