You can schedule multiple appointments for the same day, time and group. This could be multiple appointments for a single customer or multiple customers. You can accomplish this by dragging the appointment into place, on any calendar view, or when creating/editing an appointment, you simply set the same day and time. Below are a couple of images showing what it looks like when overlapping appointments occur on different calendar views. On the day calendar view, you can drag appointments between groups and time selection, for easy appointment changes!
This image is showing the weekly calendar view with 2 different customers scheduled on the same day and time.
This image is showing the day calendar view with 2 different customers scheduled for the same day, time and group.