1 Minute Meeting Notification - where did it go?

Hello, 
I used to get notifications for every meeting 1 minute beforehand. I also get the ones individually scheduled per meeting like 10 mins or 15 mins before. Reminding me 10mins before a meeting is not helpful, I will have been pulled in 6 different directions within that 10 minutes and not log into my meeting.  But the 1 minute notifications were great because I would never miss a meeting. I've tried going to settings > general and there is no toggle for 1 minute reminders (I guess there used to be). Anyone know I can get this functionality back??