To set a reminder on your smartphone for your next visit:

open the app and select the persons name you are visiting,

locate the Reminder option (above the green VISIT bar on the bottom of the screen)

Tap  set  use the calender

  1. Launch the Reminders app from the Home screen.
  2. Tap on the list you wish to add a reminder to, or create a new list.
  3. Tap the Add Reminder button to bring up the keyboard. ...
  4. Type your reminder into the list.
  5. Tap Done to add the entry to the list.

you will see Set reminder.  Use the date and time wheel