A quick search pn the searchbar gave me multiples instances of:So I asked a girl on a date, and she said ok this Sunday. What exactly should I do on Sunday to go on said date?
Sunday noon (second period) riverside, new option appear on the megaphone tab, below the "everyone let's do H" in case you were the one who invited people for a date, it'll start the event.
In case it was someone else who did it, then the event automatically starts after she/he announces the BBQ