How to set "Multiple Alerts: in Calendar?

What device are you using? Mac? iPhone? iPad? Some combination?

On my Mac, I can add more than one alert. Add the first alert then hover over it and tap the "+" sign at the right of the alert to add another.

I don't see that there is a way to add a link to a file. You can add a file in the calendar in iCloud and it will be available in Calendar on your Mac.

You should let Apple know what you'd like to see here:

Product Feedback - Apple

There are, however, lots of other calendar applications available for Macs. One of them may better suit your needs.

Emmaplus wrote:

My calendar has recently changed-and much for the worse. The two features I have noticed have gone are both what I used to rely on.

I always used the two alerts for an event: for instance, on a distant event, I would be reminded a week before-then on the day of the event. Now my calendar only has one alert. Why has Apple taken it upon itself to remove this feature?

I can confirm this; only a single alert appears to be available per entry. That's a nuisance.

The second one that I really miss is they have removed the ability to attach a file into the "notes" section

This, however, still seems to be working fine for me. The ability to add attachments is in the "Add Notes, URL or Attachments" section.

IdrisSeabright wrote:

On my Mac, I can add more than one alert. Add the first alert then hover over it and tap the "+" sign at the right of the alert to add another.

You're right! I didn't know! Thank you