How can I change the default calendar alarm time from 15 minutes to none? I've been playing around and maybe I missed it somewhere?

I don't need/want an alarm for the majority of my calendar items, so I'd like the default for new items to be none. I could set the sound to a "silent" sound, but then I wouldn't hear it for the couple of events I do want alarms for.

It gets a little annoying to remember to change the alarm on each new event I setup.

Hopefully, I missed it somewhere?