Please prefer the new version of Sheets2GCal: https://gsuite.google.com/marketplace/app/sheets2gcal/137564231775 Sheets2GCal Legacy is Google Sheets Add-on which allows you to create Google Calendars from spreadsheets. The add-on supports recurring events (without exceptions), calendar import, and creating/updating events from the Sheet - including dates, times, repeat rules (frequency, interval, count, until), event content, and guests.