A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi HolleyGVS!
I'm Jen, an independent advisor and a Microsoft user like you. I'd be happy to help you out with this issue.
You can protect your workbook to prevent users from adding new worksheets. Go to Review tab, click Protect Workbook, enter password, verify that "Structure" option is checked by default. Then click OK. Confirm Password dialog pops up. Re-type password and click OK. To check, right click any sheet tab and you can see that the insert option is disabled.
I hope this information helps. If you have any questions, please let me know and I'd be glad to assist you further.
Best Regards!
Jen :)