Before an appointment, you'll usually receive a set of Reminders.
Appointment Reminders are determined in advance by your coach according to the type of Appointment you'll be having. If you think you're better served with more or fewer, tell your coach! Reminders are easily adjustable.
If you're allowed to schedule Appointments with your coach, you'll notice the Reminders that appear during the process.

You can add, remove, and edit the Reminder set when you book an Appointment.
Editing Reminders
You can also edit the reminders for your existing appointments. Click the gear button next to an Appointment, then reminders.

Text Reminders
Text reminders are available in the United States, United Kingdom, Canada, and Australia. If you aren't able to choose "text" instead of "email", click on your name in the upper right >> My Account.
There, check that your country is set as one of the list above and that you have entered a valid phone number into the Cell (Mobile) field.