when the MeloText feature is enabled on the campaign (use the wiki)
Auto-Check Contact
...
Add Appointment
Click on Add Appointment
The Add Appointment window will be prompted
In the Appointment Date section, select the date to set the appointment
In the Status section, select the status of the appointment (Unconfirmed, Confirmed, Cancelled or Rescheduled)
Click on Submit to add the appointment in MeloText