How to enable notifications on Calendar macOS for recurrent events? I created a few recurrent events from the Calendar app but none of them are being show as notifications, neither as popup notifications (those that appear on the top-right corner of the screen) nor on the sidebar to the right (the one that appears when I click the button to the right on the menu bar).

This is how one even looks on Calendar.
Make sure event notifications are enabled for whichever calendar you're adding the events to.