Hi Roger G!
Thank you for writing to the Microsoft Answer Community Forum,
I am Shakiru, an independent advisor and a user like you, and I am glad to be helping you out today.
I'm sorry, have you checked the sort under the Data Menu and also in the customize ribbon? also do ask the colleague if the Excel sheet is not locked. if locked, you may need to contact him/her for the password to unlock it
However, Please check the customized ribbon:
Click on File Menu> select options> select the customize ribbon> Search for Sort under Sort and filter in the main tab, if missing then add from the popular tab to the main tab
Also, you can formula to sort, please check here on how to use the sort function: https://support.microsoft.com/office/22f63bd0-ccc8-492f-953d-c20e8e44b86c
Kind Regards,
Shakiru