I'd like to create a notification to tell people our site uses cookies.

I want it show on page load of the root index page and once clicked not to show again until a period of x months has passed, is this possible with this new App?

CK

Hello CK,
The Alerts component is more suitable here. You can show/hide it using dynamic attributes. In your case if cookie is not set -> show the alert, then on click set cookie value and alert won't be shown.