Select how long each appointment will be.Add a title and choose a date and time.In the event box that pops up, click Appointment slots.Open Google Calendar in Week view or Day view and click an empty time slot.The appointments will appear directly on your calendar. Tired of managing multiple email requests or transferring student conference times from a Google Doc? You can create appointment slots in Google Calendar and let your students sign up for the time they want to meet with you.