Went to put my live event on the calendar and that tool says it's going to be replaced but to schedule it through the entry details. Not sure where this is. Any help appreciated.
There is a doc on this. Can't find it just yet, but I believe it is under the Calendar portion of the Summary.
Adding this because I just had the same question today and a Champion helped me out with it (thanks Juli James! It turns out you have to change the view to "Scheduled", click on the event within calendar view, and then change the event details from "Tentative" to "Confirmed".