I see "Add Proton Drive Files as attachments in Proton Calendar events" is a present request - however, it would be great to be able to add attachments regardless of Proton Drive usage.

For example, I have a ticket to an event in my pm.me email. It would be great if I could just add the ticket to my calendar event and have all info housed in one app - one source of event truth.

Another use case: adding text documents to meeting events so the agenda is attached to the event and more readily accessed.