First, you need add Google calendar to calendar list.
After adding the calendar, you can add, edit or delete the events. All the changes will be uploaded to iCloud automatically.
Please note that you need to use the app-specific password. Please generate one on account management page of iCloud if you don’t have one yet.
Desksware started in 2004 with the simple goal of being a cost effective solution to help people be organised faster and easier. Based on this philosophy, we continue to lead the way in developing professional software that improves people's productivity.