Tag an event as a simple FYI

I sometimes create events to only have a trace of it. Or I also get events from my work email that I don't need it to be shown upfront in my calendar. I don't necessarily want to decline these events, but simply minimize them.

It would be great if we could toggle an event as a simple FYI, so that it takes no space in the calendar. The Mayday app does it in a good way, as it display these events with a simple small badge, instead of an entire block. Then, clicking on it displays the event details as usual.