First save up to 3 trusted contacts in Safety › Trusted contacts (name and phone; they’re stored encrypted and don’t need to have Datecito).
Before your date, open the confirmed datecito and tap “Turn on Datecito Safe”. Choose who to alert and how often you want us to ask if everything is OK: 15, 30, 45 or 60 minutes. When you turn it on, WhatsApp opens with a ready-made message (who, where and when); you send it.
During the date you have at hand “I’m OK”, “Exit call” (a fake call to leave without explaining), “I need help” (prepares an urgent message for your contacts) and “Call 911”.