Script Amendment Request - Google Spreadsheet > Google Calendar Event Creation

I have a basic script, sourced from here: <[login to view URL]> that enables the creation of Google Calendar entries from a Google Spreadsheet. The script creates events in the default Google Calendar based on rows of information in the spreadsheet. Although the sample code includes an option for Google Sites, I do not need this and have deleted it from my test implementation. I want to be able to do the following things with the script: 1. Add an event **update** function, to move events in the calendar if the dates or times are moved in the spreadsheet. 2. Add an event **delete** function, to delete events in the calendar if the event is deleted from the spreadsheet. 3. Add a mechanism that updates different calendars in Google Calendar (e.g. my default calendar is 'Meetings' but I have other ones such as 'Personal', 'Marketing' etc) 4. Load multiple events from a single spreadsheet Nice to have (not essential but 30% bonus will be paid if this is delivered too): 1. **Update** spreadsheet based on amendments to calendar entry in Google Calendar. Please see the URL above for the code you can use as a starter. I hope this project results in a successful project together. ## Deliverables Please contact me if the project outline is unclear.