A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi Andrew,
Thank you for asking.
I would definitely be able to help you related to your issue.
Since the workbook is shared shift cells left and up will be greyed out.
You may follow the steps below and check if it works
Click on Review tab, select Share Work, under **Editing,**and uncheck ‘allow changes by more than one use at the same time’
I hope this helps. If you need any further information, you can always reply and I’ll be happy to help you.
Thank you.