If you want to make sure that you can chat at a specific time or with a specific tutor, it's easy to schedule your lesson in advance on Cambly! Click here for more details about scheduling lessons.
When it's time for your scheduled lesson, you can start the call by clicking on the calendar icon in the upper-right corner or by checking the "Upcoming Lessons" section on the app. Click "Call" to start the lesson.
Remember: you (the student) have to call your tutor to begin the lesson. Your tutor cannot call you.