Navigate to calendar settings. Click Add New Calendar. Follow the video for detailed instructions and setup your calendar to your preferences.
Group calendars are best used when you have multiple people or multiple services that you book appointments for. First create a group by clicking Add Group. Once created, you will have a new column on the page for this group. Click Add New Calendar in that groups column to create a calendar. The setup is similar with a few differences. Follow the video for detailed instructions and create as many calendars as you require.