The matchmaker will come to your tamagotchi about 72 hours (3 days) after your tamagotchi turned into an adult. She will come 3 times a day for 3 days if you keep saying NO to her choices. She comes at 10:30am, 3:00pm, and 7:00pm. If you are the right age for the matchmaker you can set the time to one minute before any one of the given times and wait a minute. The matchmaker should come!
Once the tamagotchi has a baby, the adult will leave on the second night with the baby at 12am. On the second day of the parent being with the baby you can set the time to 11:59pm and wait a minute and you should see the parent leaving the baby. It will take a couple of minutes and during that time and for a few seconds afterwards you will not be able to use any of the buttons. Then you can set the time back to the regular time and you will be able to name and take care of your new baby tama and start a new generation!
GotchiGirl96